Multiple Choice
Which of the following is the atomic number of chlorine?
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- 1. Intro to General Chemistry4h 1m
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2. Atoms & Elements
Periodic Table: Element Symbols
Multiple Choice
Which element on the periodic table has 79 protons?
A
Mercury (Hg)
B
Platinum (Pt)
C
Silver (Ag)
D
Gold (Au)
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Verified step by step guidance1
Recall that the number of protons in an atom is called its atomic number, which uniquely identifies each element on the periodic table.
Look up the atomic numbers of the given elements: Mercury (Hg), Platinum (Pt), Silver (Ag), and Gold (Au).
Mercury (Hg) has an atomic number of 80, Platinum (Pt) has 78, Silver (Ag) has 47, and Gold (Au) has 79.
Since the element with 79 protons corresponds to the atomic number 79, identify which element matches this number.
Conclude that the element with 79 protons is Gold (Au), as it has the atomic number 79.
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