Isotopes of the same element have
A) the same number of neutrons but different numbers of protons.
B) different numbers of protons and electrons.
C) the same mass number.
D) the same atomic number but differ in their mass numbers.
E) no mass number.

Question

Quizplus · Accepted Answer

Isotopes of the same element have the same number of protons (hence the same atomic number) but differ in the number of neutrons, leading to different mass numbers.

Isotopes of the Same Element Have