Question

Elements that have the same number of protons but a different number of neutrons in the nucleus are called

A periods.
B metalloids.
C groups.
D isotopes.​

Answer 1

The answer is D Because isotopes have the same number of protons but different number of neutrons

Answer 2

D isotopes


They are atoms of an element with the normal number of protons and electrons but different number of protons and electrons