Question

A chlorine atom has 17 protons and 18 neutrons. How do you calculate its mass number?

Powered by Froala Editor

Answer

To calculate the mass number of an atom, you need to add together the number of protons and the number of neutrons in its nucleus.


formula:

Mass number = Number of protons + Number of neutrons

Mass number = 17 + 18

Mass number = 35

Powered by Froala Editor

Back to Questions