The main atomic partilces are electrons, protons and neutrons.
Electrons are around the nuclei and have negative charge.
Protons and neutrons are in the nulei of the atoms. Protons are positive and their charge balance the charge of the electrons, so the atom is neutral.
Neutrons have no charge.
So, the answer is:
the charge of electrons is negative, the charge of the protons is positive and the neutrons have no charge.
I'll try to explain this in the simplest way I've learned it.
What the last column basically meant was that if the second word of the compound has a negative ion charge
and contains oxygen it will give the the compound a name ending with -ate
I believe it is A because 32C would be way too much and it wouldnt go down to -5
