Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Which of the following best differentiates isotopes from one another?
Options
A Number of protons
B Number of electrons
C Number of neutrons
Correct Answer
D Atomic number
Correct Answer

Option C is the correct answer.

Detailed Explanation

Isotopes are atoms of the same element (same number of protons) that have different numbers of neutrons. This difference in neutron number gives them different mass numbers.

Hint

They are the same element, so the proton count is identical. What else in the nucleus can vary?

Question Info