Can someone help me with thins, im to lazy to read rn i did freaking 47 over due homework

Smh das tough and all and same i got hella overdue

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.