The -ve charge is due to excess electrons (similarly +ve charge is from a lack of electrons.)
The number of protons doesn't change (otherwise the element would change) but electrons can be lost/gained to give charged ions...
in SO42- where did the excess of 2 electrons come from? if the S supplies 16 electrons and the O supplies 32 electrons surely it would be 48 electrons in total and not 50?
in SO42- where did the excess of 2 electrons come from? if the S supplies 16 electrons and the O supplies 32 electrons surely it would be 48 electrons in total and not 50?
neutral S provides 16 electrons, neutral O provides 32 electrons
you have a 2- charge on the ion so you have to add 2 more electrons
Alright, so if I understood your reasoning, one mole of proton contains 3 moles of quarks which each contains one mole of 6.02*10^23 particles?
Well I wouldn't normally think about it in that way - I only brought up elementary particles because your question seemed rather odd. I guess you could argue that each proton contains 3 quarks so therefore a mole of protons contains 3 moles of particles, but it's not something anyone would ever ask.