Question

What is an isotope?

a.
A form of an element with a different number of electrons
c.
A form of an atom with a different amount of orbitals
b.
A form of an atom with a different number of protons
d.
A form of an atom with a different number of neutrons

Answer 1

I think the answer is Option A

Answer 2

The answer is D. Isotopes have the same number of protons but a different number of neutrons :)