This is a chemical element. You can find the how many electron in a single atom by using a Periodic Table.
Nickel has 3 (three) electron shells.
The electron configuration of nickel is: [Ar]4s13d9 (four electron shells).
8
Ununquadium has seven electron shells.
31 electrons, 4 rings/shells.
54 electrons
The number of period corresponds to the total number of electron rings.
None. the valence "rings" surround a an atomic nucleus.
nickel's outside electron shell is not full.
Einsteinium has 7 electron shells.
It depends upon the atom.....
Lawrencium has 7 electron shells.