Isotopes of an element always have the same
A)mass number.
B)number of neutrons.
C)number of subatomic particles.
D)atomic number.

Question

Quizplus · Accepted Answer

Isotopes of an element have the same atomic number, which means they have the same number of protons in their nuclei. The atomic number is what defines an element. Isotopes differ in their number of neutrons, leading to different mass numbers, but the atomic number remains constant across all isotopes of a given element.

Isotopes of an Element Always Have the Same