Question

What is the total number of neutrons in an atom of k-42

Answer 1

23 neutrons

Step-by-step explanation:

Answer 2

23

This particular isotope of potassium-42 contains 42 nucleons (i.e., protons and neutrons, combined;) Like other isotopes of potassium 19 out of these nucleons are protons; the rest 42−19=23 are therefore neutrons.