AP Chemistryeasymcq1 pt
Isotopes are atoms of the same element that differ in:
A.Number of protons
B.Number of neutrons
C.Number of electrons
D.Atomic number
Explanation
Core Concept
Isotopes are atoms of the same element (same number of protons) that have different numbers of neutrons, resulting in different mass numbers.
Correct Answer
BNumber of neutrons
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