Multiple Choice
Which letter is not used in any official chemical element symbol on the periodic table?
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4. Atoms and Elements
Periodic Table: Element Symbols
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Which element has 47 protons in its nucleus?
A
Gold (Au)
B
Silver (Ag)
C
Cadmium (Cd)
D
Palladium (Pd)
Verified step by step guidance1
Recall that the number of protons in the nucleus of an atom defines the atomic number of the element.
Identify the atomic number corresponding to each element given: Gold (Au), Silver (Ag), Cadmium (Cd), and Palladium (Pd).
Look up or recall the atomic numbers: Gold has atomic number 79, Silver has atomic number 47, Cadmium has atomic number 48, and Palladium has atomic number 46.
Match the atomic number 47 to the element with that atomic number, which is Silver (Ag).
Conclude that the element with 47 protons in its nucleus is Silver (Ag).
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