So, let's try out the quiz. This quiz has been developed to test your knowledge about atomic numbers, protons, atomic mass and neutrons. atomic number 82 explanation. For example, element 120 has the temporary name unbinilium. Atomic number, mass number, and isotopes How to use the atomic number and the mass number to represent different isotopes The following video shows an example of calculating the number of neutrons. The centre of the atom is known as Nucleus, around which electrons flow which carries the negative charge. Looking for definition of atomic number 82? The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electron configuration is [Ar] 3d 10 4s 2 4p 4. The number of protons will always tell you what element it is; the only difference here is their atomic weight (the sum of their protons and neutrons). Selenium (atomic symbol: Se, atomic number: 34) is a Block P, Group 16, Period 4 element with an atomic radius of 78.96. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. In Science, 82 is the atomic number of lead. I assume that you are referring to nuclear instability. In mathematics, 82 is an even number because it is divisible by two. Lead Atomic Number: 82 Lead Atomic Weight: 207.2 What is Lead? The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present). An atom is a primary piece of matter which is made up of protons, neutrons, and electron called subatomic particles. As we know, in the past, all the plumbing was made of lead, which results in poisoning and death. Atomic mass of Lead is 207.2 u. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. The systematic element name is a temporary name that is based on the atomic number as a root and the -ium ending as a suffix. If you're interested in the different chemical properties of Barium 138 and Barium 134, I suggest the "Isotopes of Barium" page on www.wikipedia.org as a good jumping off point. When reversed, it becomes 28. The selenium atom has a radius of 120 pm and a Van der Waals radius of 190 pm. The atomic number is the number of protons in the nucleus of an atom. Before a name and symbol are approved, an element may be referred to by its atomic number (e.g., element 120) or by its systematic element name. Facts about 82. In Roman Numerals, 82 is written as LXXXII. In some ways, it is amazing that any nuclei are stable—with the exception of hydrogen’s main isotope, all nuclei contain protons (which should be repelling each other) in a very small space. The chemical symbol for Lead is Pb.. Atomic Mass of Lead. Atomic Number: 35 Atomic Mass: 79.904 amu Melting Point:-7.2 °C (265.95 K, 19.04 °F) Boiling Point: 58.78 °C (331.93 K, 137.804 °F) Number of Protons/Electrons: 35 Number of Neutrons: 45 Classification: Halogen Crystal Structure: Orthorhombic Density @ 293 K: 3.119 g/cm 3 Color: Red Atomic Structure It is also divisible by 1, 41, and 82. Its symbol is Pb, after the Latin plumbum. Lead is a chemical element in the carbon group under number 82. Define atomic number 82 by Webster's Dictionary, WordNet Lexical Database, Dictionary of Computing, Legal Dictionary, Medical Dictionary, Dream Dictionary. Thankfully, it no longer is. Atomic Number of Lead. All the best! 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