Apentix/AP Chemistry/Unit 1: Atomic Structure and Properties/Question
AP Chemistryeasymcq1 pt

Isotopes are atoms of the same element that differ in:

A.Number of neutrons
B.Atomic number
C.Number of electrons
D.Number of protons

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

ANumber of neutrons

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