Which of the following compounds dissociate in water forming positive hydrogen ions?

a. sodium hydroxide
e. potassium sulphate
b. aluminium oxide
d. sulphuric acid​

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.

The teacher is mostly talking about the distillation of a mixture