1 answer
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Has a positive charge (proton, b)
Has a neutral charge (neutron, a)
Has a negative charge (electron, e)
Found in the nucleus of an atom, (proton & neutron, E)
Mass of 1 AMU.(proton & neutron, E)
I notice you have nothing about quarks. Protons and neutrons are made up of "up quarks" and "down quarks". A proton is two up and 1 down quark while a neutron is 2 down and 1 up.