Isotopes of an element have nuclei with
A) a different number of protons, and the same numbers of neutrons.
B) the same number of protons, but different numbers of electrons.
C) a different number of protons, and a different number of neutrons.
D) the same number of protons, but different numbers of neutrons.
E) the same number of protons, and the same number of neutrons.

Question

Quizplus · Accepted Answer

Isotopes of an element have the same number of protons (which defines the element) but differ in the number of neutrons in their nuclei. This results in isotopes having different atomic masses.

Isotopes of an Element Have Nuclei with