Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. The name xenon for this gas comes from the Greek word [xenon], neuter singular form of [xenos], meaning foreign(er), strange(r), or guest. In the case of an electron, Z = 1, and for a positron, Z = +1. Too many electrons orbiting the atom pull protons away from the neutrons in the center. Indium is a post-transition metal that makes up 0.21 parts per million of the Earths crust. One unified atomic mass unit isapproximatelythe mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. The number of electrons in a neutral atom is equal to the number of protons. Anyone canbe able to come here,learn the basicsofmaterials science, material properties and to compare these properties. Analytical cookies are used to understand how visitors interact with the website. Thechemical symbolfor Astatine isAt. The consent submitted will only be used for data processing originating from this website. Can a nuclear winter reverse global warming? Neutron Number and Mass Number of Bismuth Mass numbers of typical isotopes of Bismuth are 209. These objects contain even more material than the sun, but they are only about 10 miles across the size of a city. Thechemical properties of the atomare determined by the number of protons, in fact, by number andarrangement of electrons. Thechemical symbolfor Bromine isBr. Californiumis a chemical element withatomic number98which means there are 98 protons and 98 electrons in the atomic structure. Caesiumis a chemical element withatomic number55which means there are 55 protons and 55 electrons in the atomic structure. Holmium is a relatively soft and malleable silvery-white metal. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. A neutral atom has the same number of protons and electrons (charges cancel each other out). In nuclear reactors, promethium equilibrium exists in power operation. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Ut enim ad minim. Neutrons have approximately the same mass as protons but no charge. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Located in the constellation Coma Berenices about 300 million light-years from Earth, it has a mass 21 billion times greater than our sun. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Thechemical symbolfor Copper isCu. Multiple-choice. How can global warming lead to an ice age. Thechemical symbolfor Thallium isTl. Pure radium is silvery-white alkaline earth metal. Hydrogenis a chemical element withatomic number1which means there are 1 protons and 1 electrons in the atomic structure. Continue with Recommended Cookies. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. This cookie is set by GDPR Cookie Consent plugin. Thechemical symbolfor Iridium isIr. There are only certain combinations of neutrons and protons, which formsstable nuclei. An atom of an element in a compound will have a positive oxidation state if it has had electrons removed. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. It is a noble metal and a member of the platinum group. Yeah. Phosphorusis a chemical element withatomic number15which means there are 15 protons and 15 electrons in the atomic structure. Gold is a transition metal and a group 11 element. Iron is a metal in the first transition series. It is even less abundant than the so-called rare earths. Arsenicis a chemical element withatomic number33which means there are 33 protons and 33 electrons in the atomic structure. The Cookies Statement is part of our Privacy Policy. The number of protons in an atom. Lead is a heavy metal that is denser than most common materials. Protons. Thechemical symbolfor Terbium isTb. Thechemical symbolfor Boron isB. How many proton neutrons and electrons does bismuth have? It is also the most corrosion-resistant metal, even at temperatures as high as 2000 C. Erbiumis a chemical element withatomic number68which means there are 68 protons and 68 electrons in the atomic structure. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. Thechemical symbolfor Radium isRa. Therefore this resulting atomic mass is calculated from naturally-occurring isotopes and their abundance. number of neutrons = mass number atomic number. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. The difference between the neutron number and the atomic number is known as theneutron excess: D = N Z = A 2Z. All of its isotopes are radioactive. Fermiumis a chemical element withatomic number100which means there are 100 protons and 100 electrons in the atomic structure. What is the formula for potential energy is? It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. Mass numbers of typical isotopes of Bismuthare209. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Its properties are thus intermediate between those of chlorine and iodine. 0 Comments; Uncategorized luffy's father revealed at marineford episode number . Perkataan berlawan bagi masuk ia, Cara Nak Buat Bentuk Love Malaysia Guna Kapas, Contoh Contoh Soalan Yang Ditanya Semasa Temuduga Kastam. Thechemical symbolfor Manganese isMn. When an atom gains electrons this results in a negative charge. How do you solve the riddle in the orphanage? It could be part of the main body, but then the periodic table would be rather long and cumbersome. scientists determined that each U-238 atom has a 50% chance of decaying into Pb-206 during about 4.5 billion years. Tungstenis a chemical element withatomic number74which means there are 74 protons and 74 electrons in the atomic structure. Similarly, the lower left subscript gives the charge of the particle. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Chlorineis a chemical element withatomic number17which means there are 17 protons and 17 electrons in the atomic structure. Thechemical symbolfor Thorium isTh. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. It can be observed from the chart that there aremore neutrons than protonsin nuclides withZ greaterthan about 20 (Calcium). Approximately 6070% of thallium production is used in the electronics industry. Mercuryis a chemical element withatomic number80which means there are 80 protons and 80 electrons in the atomic structure. Sulfuris a chemical element withatomic number16which means there are 16 protons and 16 electrons in the atomic structure. The most common isotope of uranium has 92 protons and 146 neutrons. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Thechemical symbolfor Gadolinium isGd. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. The atomic mass is carried by the atomic nucleus, which occupies only about 10-12of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. 2) You may not distribute or commercially exploit the content, especially on another website. neutrons. The Cookies Statement is part of our Privacy Policy. Theseextra neutronsare necessary for stability of the heavier nuclei. Theconfiguration of these electronsfollows from the principles of quantum mechanics. bismuth has 83 protons and electrons.Bi-209 isotope has 126 neutrons. Thallium is a soft gray post-transition metal is not found free in nature. Nitrogenis a chemical element withatomic number7which means there are 7 protons and 7 electrons in the atomic structure. Argon is the third-most abundant gas in the Earths atmosphere, at 0.934% (9340 ppmv). Einsteiniumis a chemical element withatomic number99which means there are 99 protons and 99 electrons in the atomic structure. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Terbiumis a chemical element withatomic number65which means there are 65 protons and 65 electrons in the atomic structure. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. I beli Thuliumis a chemical element withatomic number69which means there are 69 protons and 69 electrons in the atomic structure. Antimonyis a chemical element withatomic number51which means there are 51 protons and 51 electrons in the atomic structure. Research in high-energy particle physics in the 20th century revealed that neither the neutron nor the protonis notthe smallest building block of matter. How do you determine the number of neutrons in an atom? The number of neutrons in an atom can be determined by the difference between the atomic mass and . Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Zirconium is widely used as a cladding for nuclear reactor fuels. The post-transition metals are aluminum Al gallium Ga indium In thallium Tl tin Sn lead Pb and bismuth Bi and they span Group 13 to Group 17. Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. Lawrenciumis a chemical element withatomic number103which means there are 103 protons and 103 electrons in the atomic structure. , calling it a backward continent. Atomic Number:83. Neonis a chemical element withatomic number10which means there are 10 protons and 10 electrons in the atomic structure. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Owing to the very high atom utilization. Europium is one of the least abundant elements in the universe. Thechemical symbolfor Neon isNe. Bismuth oxide (Bi 2 O 3) Bismuth subgallate (C 7 H 5 BiO 6) Bismuth subsalicylate (C 7 H 5 BiO 4) Bismuth telluride (Bi 2 Te 3) Interesting facts: Since bismuth bismuth 's atomic number is 83 83, Bi Bi has 83 83 protons. Tin is a post-transition metal in group 14 of the periodic table. Neutrons stabilize the nucleus, because they attract each other and protons , which helps offset the electrical repulsion between protons. Although carbon-12 is the most abundant type of isotope in carbon, it is not the only isotope. Bismuth was long considered the element with the highest atomic mass that is stable, but in 2003 it was discovered to be extremely weakly radioactive: its only primordial isotope, bismuth-209, decays via alpha decay with a half-life more than a billion times the estimated age of the universe. All atoms of bismuth have 83 protons. The most common isotope of uranium has 92 protons and 146 neutrons. Greg RobsonCC BY 20. The proton has a mean square radius of about 0.87 1015m, or 0.87 fm, and it is a spin fermion. The atomic number of the atom goes down by two as a result of the loss of two protons the atom becomes a new element. Symbol:Bi. Thechemical symbolfor Selenium isSe. Remember that it's the number of protons in an element that determines the atomic number of that element.. Thechemical symbolfor Uranium isU. Thechemical symbolfor Vanadium isV. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Total number of protons in the nucleus is called theatomic numberof the atom and is given thesymbol Z. How heavy is a teaspoon of a neutron star? [Xe] 6s2 for barium). These objects contain even more material than the sun, but they are only about 10 miles across the size of a city. Home / how many protons are in an atom of bismuth; how many protons are in an atom of bismuth. Melting Point:271.3 C (544.45 K, 520.33997 F) Boiling Point:1560.0 C (1833.15 K, 2840.0 F) Number of Protons/Electrons:83. Neutron number is rarely written explicitly in nuclide symbol notation, but appears as a subscript to the right of the element symbol. Platinum is one of the least reactive metals. Rounded to the nearest whole number, how many protons are in an atom of krypton? Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. how many protons are in an atom of bismuth; how many protons are in an atom of bismuth. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Thechemical symbolfor Hydrogen isH. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Nickelis a chemical element withatomic number28which means there are 28 protons and 28 electrons in the atomic structure. An ion of an atom is one in which the number of protons and electrons is not the same. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Thechemical symbolfor Nobelium isNo. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Therefore, a cobalt atom has twenty-seven protons and twenty-seven electrons. According to the Einstein relationship (E=mc2), this binding energy is proportional to thismass differenceand it is known as themass defect. The atomic number of the element Bismuth is 83. Bismuth is a chemical element with the symbol Bi and atomic number 83. How many protons are in an atom? Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Neptunium metal is silvery and tarnishes when exposed to air. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. What is the answer punchline algebra 15.1 why dose a chicken coop have only two doors? Carbon is one of the few elements known since antiquity. Bismuth 214 ; 19.7 minutes : Polonium 214 ; 0.00016 . Thechemical symbolfor Zirconium isZr. Thechemical symbolfor Molybdenum isMo. Primordial bismuth consists entirely of this isotope. 1) You may use almost everything for non-commercial and educational use. Thechemical symbolfor Krypton isKr. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Rubidiumis a chemical element withatomic number37which means there are 37 protons and 37 electrons in the atomic structure. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). 2.1 Electrons, Protons, Neutrons, and Atoms. What do you think are these infuences?_____________________________________________________________________. Thechemical symbolfor Antimony isSb. An ion has an unequal number of protons and electrons. Number of Neutrons:126. 8 devine street north haven, ct what is berth preference in irctc how many protons are in an atom of bismuth. Bismuth Bi 3 cadmium Cd 2 calcium Ca 2 cesium. Thechemical symbolfor Lithium isLi. Its boiling point is the lowest among all the elements. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earths crust and is more common than such metals as tin. How many electrons protons and neutrons does bismuth have? Thechemical symbolfor Rhenium isRe. Greg RobsonCC BY 20. Lutetiumis a chemical element withatomic number71which means there are 71 protons and 71 electrons in the atomic structure. The atomic number of an element is equal to the number of protons and electrons in that element. Radiumis a chemical element withatomic number88which means there are 88 protons and 88 electrons in the atomic structure. Address Thechemical symbolfor Tin isSn. linalove203 linalove203 09/14/2016 Mathematics Middle School answered How many protons are in an atom of bismuth 2 See answers Advertisement For example, the neutron number of uranium-238 is 238-92=146. The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. What is error code E01-5 on Toyota forklift. Thechemical symbolfor Tellurium isTe. Thechemical symbolfor Promethium isPm. Thechemical symbolfor Neodymium isNd. The number of electrons in an electrically-neutral atom is the same as the number of protons in the nucleus. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. The information contained in this website is for general information purposes only. Bombarding Bismuth-209 with iron-58 nuclei 20983 Bi + 5626 Fe 264109 Mt + 1 n. San Vicente, Pili, Camarines Sur AY 2022 - 2023 the timeline . The total number ofneutronsin the nucleus of an atom is called theneutronnumberof the atom and is given thesymbol N. Neutronnumber plusatomic numberequals atomic mass number:N+Z=A. Note that, eachelementmay contain moreisotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. This cookie is set by GDPR Cookie Consent plugin. 3rd shell can hold 18 electrons. This unnamed intergalactic goliath is the current heavy-weight champion. What is the reflection of the story of princess urduja? The number of protons in the nucleus of the atom is equal to the atomic number (Z). The upper limit of mass for a neutron star is called the TolmanOppenheimerVolkoff limit and is generally held to be around 2.1 M , but a recent estimate puts the upper limit at 2.16 M . I agree that James has been a great class president but, in my opinion, it is also good to give others a chance. We use cookies to ensure that we give you the best experience on our website. Chromiumis a chemical element withatomic number24which means there are 24 protons and 24 electrons in the atomic structure. the commitment trust theory of relationship marketing pdf; cook county sheriff police salary; pantene truly natural discontinued Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Thulium is an easily workable metal with a bright silvery-gray luster. . Neptunium as 93 protons and 144 neutrons in its nucleus giving it an Atomic Number of 93 and an atomic mass of 237. The rest of the isotopes are intentionally synthesized or created "incidentally" in nuclear reactions - like those in nuclear reactors, to cite one example. Titanium can be used in surface condensers. how many protons are in an atom of bismuth. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Fluorineis a chemical element withatomic number9which means there are 9 protons and 9 electrons in the atomic structure. Zirconiumis a chemical element withatomic number40which means there are 40 protons and 40 electrons in the atomic structure. 2.1 Electrons, Protons, Neutrons, and Atoms. Telluriumis a chemical element withatomic number52which means there are 52 protons and 52 electrons in the atomic structure. Bismuth Element information, properties and uses | Periodic Table. Thechemical symbolfor Tungsten isW. Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. One atomic mass unit is equal to 1.66 x 10 -24 grams. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. Uranium is a silvery-white metal in the actinide series of the periodic table. Therefore, a cesium atom has fifty-five protons and fifty-five electrons. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Boronis a chemical element withatomic number5which means there are 5 protons and 5 electrons in the atomic structure. By bombarding bismuth with manganese they got isotope 263 by bombarding californium with neon they got isotope 270 and by bombarding lead with iron they got isotope 264. The neutron has a mean square radius of about 0.81015 m, or 0.8 fm, and it is a spin- fermion. Iodine has 53 protons and 74 neutrons. Additional Questions. Q n positive charge of gold atom 79 e 1266 10 17 C Q charge of alpha particle 2 e 3204 10 19 C r radius of a gold atom 144 10 10 m. These elements have some of the. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. It occurs on Earth as the decay product of various heavier elements. The number of protons in the atom's nucleus is indicated by the atomic number. Magnesium-24, 24Mg Tin-119, 119Sn Sodiumis a chemical element withatomic number11which means there are 11 protons and 11 electrons in the atomic structure. However, you may visit "Cookie Settings" to provide a controlled consent. The first two columns on the left side of the periodic table are where thessubshells are being occupied. Argonis a chemical element withatomic number18which means there are 18 protons and 18 electrons in the atomic structure. coinspot deposit not showing. How many atoms are in an atom of bismuth? Fermium is a member of the actinide series. Zincis a chemical element withatomic number30which means there are 30 protons and 30 electrons in the atomic structure. These other "flavors" of bismuth are its isotopes, and the numbers of neutrons in bismuth range from 101 to 135. Thechemical symbolfor Fermium isFm. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do Chemically, indium is similar to gallium and thallium. =) Based on the information in the table, which two elements are most likely in the same group, and why? Pure alpha or beta decays are very rare. bismuth has 83 protons and electrons.Bi-209 isotope has 126 To identify the stability of an isotope it is needed to find the ratio ofneutronstoprotons. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. Thechemical symbolfor Chromium isCr. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. At 0.099%, phosphorus is the most abundant pnictogen in the Earths crust. Atomic nuclei consist of protons and neutrons, which attract each other throughthenuclear force, while protons repel each other viatheelectric forcedue to their positive charge. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. Black hole in galaxy NGC 4889. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge a cation, which combines with anions to form salts. How many protons and neutrons are in bismuth? Thechemical symbolfor Germanium isGe. 83 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). 83 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). The number of protons in an atom is referred to as the atomic number of that element. 24 Jun . Thechemical symbolfor Rubidium isRb. Magnesiumis a chemical element withatomic number12which means there are 12 protons and 12 electrons in the atomic structure. Technetiumis a chemical element withatomic number43which means there are 43 protons and 43 electrons in the atomic structure. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. If you have an atom of bismuth that has been ionized (changed the number of electrons) and become 209Bi5+? Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbrn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjrn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2023 Periodic Table | All Rights Reserved |. The chemical symbol for Helium is He. Goldis a chemical element withatomic number79which means there are 79 protons and 79 electrons in the atomic structure. Silveris a chemical element withatomic number47which means there are 47 protons and 47 electrons in the atomic structure. These cookies track visitors across websites and collect information to provide customized ads. Yeah Bismuth has an atomic number of 83. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to1,602 x 10-19coulombs. 1 How many protons and electrons are there in bismuth? Nearly all technetium is produced synthetically, and only minute amounts are found in the Earths crust. In . 100. Therefore we will have 83 protons. It is the fifth most abundant element in Earths crust and the third most abundant metal, after iron and aluminium. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. These cookies ensure basic functionalities and security features of the website, anonymously. , eve that just like last year, you will be able to perform the duties of a class president excellently and the lead the class effectively. Platinumis a chemical element withatomic number78which means there are 78 protons and 78 electrons in the atomic structure. The cookie is used to store the user consent for the cookies in the category "Other. Bismuth is the 83rd element of the periodic table so its atomic number is 83. It rarely occurs in its elemental state or as pure ore compounds in the Earths crust. 123 Fifth Avenue, New York, NY 10160. For the first time, scientists have without a doubt observed not one but two collisions between black holes and neutron stars. Post author: Post published: February 17, 2022; Post category: miami university facilities management; Post comments: . Tellurium is far more common in the universe as a whole than on Earth. Thorium is moderately hard, malleable, and has a high melting point. A teaspoon of neutron star material would weigh 4 billion tons! Bismuth-210 is composed of 83 protons, 127 neutrons, an 83 electrons. Neutrons and protons, commonly callednucleons, are bound together in the atomic nucleus, where they account for 99.9 percent of the atoms mass. How many neutrons are in bismuth? Cr this has 24 protons. Unstable isotopesdecay through various radioactive decay pathways, most commonly alpha decay, beta decay, or electron capture. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. Neodymium is a soft silvery metal that tarnishes in air. Ytterbiumis a chemical element withatomic number70which means there are 70 protons and 70 electrons in the atomic structure.