By best, I mean they are typically the eaisiest to use and give a pretty decent energy yeild. there are obviosly some that likely give higher energy yeilds but they are not always neccecarily the easiest to manipulate,contain,produce,ect
although can you clarify what you mean by 'best'?
can confirm the zoidler is right, protons are p+, electrons are e- and neutrons are n0
this is just repeating the fission but its multipled*
this is just reating the fission but its multipled.
fusion works when there is enough prssure on two (or more) substances that it forces their nuclei to combine, which can realease huge amounts of energy (more than fission) and it works best with things like hydrogen-3 (tritium) and hydrogen-2(deuterium)
A horizontal line through the middle means negetive charge
the symbol for neutral charge is nothing at all