The number of energy levels to which an electron can jump depends on the amount of energy the electron possesses. Each energy level has a specific amount of energy an electron needs to have before it can be in there. So, if an electron doesn't have enough energy to be in that energy level then it won't jump to that higher level.
<span>The superscripts in an electron configuration represents the number of electrons and protons in an element. </span>
The thing that it is called is it is called the atomic number of the thing