Multiple Choice
Which of the following statements best describes the basic structure of an atom?
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2. Atoms & Elements
The Atom
Multiple Choice
Which of the following is the number of protons in a neutral atom of nickel (Ni)?
A
28
B
58
C
60
D
30
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Verified step by step guidance1
Recall that the number of protons in a neutral atom is equal to the atomic number of the element.
Identify the element given in the problem, which is nickel (Ni).
Look up the atomic number of nickel on the periodic table; the atomic number corresponds to the number of protons.
Note that the atomic number of nickel (Ni) is 28, meaning a neutral nickel atom has 28 protons.
Confirm that the number of protons is independent of the isotope mass number, so options like 58 or 60 refer to isotopes, not the proton count.
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