Question

Identify which of the following statements about the isotopes of an element is correct.

A. They have the same electron configuration.

B. They have the same mass number.

C. They have the same numbers of protons and neutrons in the nucleus.

D. They have more protons than neutrons.

Answer 1

A

Step-by-step explanation:

because B is wrong as it doesn't have the same mass number. C is wrong as it has different number of neutrons. D is wrong as it has more neutrons than protons.