Question

PLEASE HELP Me with this Quickly
which statement is completely accurate?

1) atoms atoms of the same element always have different numbers of neutrons
2) atoms of the same element can have different numbers of neutrons
3) atoms of the same element can have neutrons but exist without protons
4) atoms of the same element always have different atomic weights​

Answer 1

Answer:

4( atoms of the same element always have different atomic weights)

Explanation:

the number of protons in the atoms of the same type can be different especially in isotopes