Potassium-40 is a minor isotope found in naturally occurring potassium. It is radioactive and can be detected on simple radiation counters. How many protons, neutrons, and electrons does potassium-40 have when it is part of K2SO4?
(A)21 neutrons, 19 protons, 18 electrons (B)20 neutrons, 19 protons, 19 electrons (C)21 neutrons, 19 protons, 19 electrons (D)19 neutrons, 19 protons, 19 electrons
A