Question

Which statement is completely accurate?

Atoms of the same element always have different numbers of neutrons.

Atoms of the same element can have different numbers of neutrons.

Atoms of the same element always have different atomic weights.

Atoms of the same element can have neutrons but exist without protons.

Answer 1

: Atoms of the same element can have different numbers of neutrons.

~Sarah Robinsen

Answer 2

Atoms of the same element can have different numbers of neutrons.

These are referred to as isotopes of an element.