Multiple Choice
Which of the following is the chemical symbol for calcium?
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2. Atoms & Elements
Periodic Table: Element Symbols
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Which element on the periodic table currently has the greatest atomic number?
A
Uranium (U)
B
Lead (Pb)
C
Oganesson (Og)
D
Gold (Au)
Verified step by step guidance1
Understand that the atomic number of an element is the number of protons in its nucleus, which uniquely identifies the element on the periodic table.
Recall that the periodic table is arranged in order of increasing atomic number, starting from Hydrogen with atomic number 1.
Identify the atomic numbers of the given elements: Uranium (U) has atomic number 92, Lead (Pb) has atomic number 82, Gold (Au) has atomic number 79.
Recognize that Oganesson (Og) is a synthetic element with a much higher atomic number, specifically 118, making it the element with the greatest atomic number currently known.
Conclude that among the options, Oganesson (Og) has the greatest atomic number because it is the last element officially recognized on the periodic table as of now.
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