Question

The isotope atoms differ in ?
A. number of neutrons
B. atomic number
C. number of electrons
D. atomic weight

Answer 1

$\large\bf{Question:}$

The isotope atoms differ in ?

A. number of neutrons ✔️✔️✔️

B. atomic number

C. number of electrons

D. atomic weight

Answer 2

A) number of neutrons