Question

What do we have to have to be able to determine the number of neutrons?

A. average atomic mass

B. mass number

Answer 1

B. Mass number

Step-by-step explanation:

In order to gain the number of neutrons you need to subtract the Protons from the atomic mass (also known as the mass number or nucleon number.

For example :

Carbon - protons= 6

Nucleons=12

Therefore carbons neutrons = 6

Answer 2

Answer is A :)

Step-by-step explanation: