Multiple Choice
An element possesses 4 energy levels. How many total electrons can it theoretically hold?
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9. Electrons in Atoms and the Periodic Table
Electronic Structure: Number of Electrons
Multiple Choice
Which neutral element has 47 electrons?
A
Gold (Au)
B
Palladium (Pd)
C
Silver (Ag)
D
Cadmium (Cd)
Verified step by step guidance1
Recall that a neutral atom has an equal number of protons and electrons.
Identify the atomic number of each element, which corresponds to the number of protons (and electrons in a neutral atom).
Look up the atomic numbers: Gold (Au) is 79, Palladium (Pd) is 46, Silver (Ag) is 47, and Cadmium (Cd) is 48.
Since the element with 47 electrons must have an atomic number of 47, match this to the element Silver (Ag).
Conclude that the neutral element with 47 electrons is Silver (Ag).
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