1. In the representation aXz, A stands for _____ and Z stands for______ 2. Atomic Number gives the number of _______ 3. Mass number is equal to the number of _____ and ______ inside the nucleus of an atom. 4. Since atom is neutral, this means that the number of ______ is equal to the number of _____ 5. To determine the number of neutron inside the atom, subtract the _____ from the ____ pahelp po salamat