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How many elements are currently represented on the periodic table of elements?
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2. Atoms & Elements
Periodic Table: Element Symbols
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Which noble gas has the greatest atomic number?
A
Og
B
He
C
Ne
D
Rn
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Understand that noble gases are elements in Group 18 of the periodic table, known for their full valence electron shells and chemical inertness.
Recall the list of noble gases in order of increasing atomic number: Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson (Og).
Identify the atomic numbers of the given noble gases: He (2), Ne (10), Rn (86), and Og (118).
Compare these atomic numbers to determine which is the greatest.
Conclude that the noble gas with the greatest atomic number among the options is Oganesson (Og) with atomic number 118.
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