Question

An atom has mass number 22 and atomic number 13.
Find the number of neutrons in the atom​

Answer 1

9

Step-by-step explanation:

Atomic number = number of protons

Mass number = nuetrons + protons

So to find the number of nuetrons in the atom we can minus the number of protons by the mass number:

Mass number - number of protons/atomic number = number of nuetrons

22 - 13 = 9