It's predicted that this element will be shown to have seven. Please see the link.
Technetium has five electron shells.
Magnesium has three electron shells. The electron configuration is 2,8,2
A bismuth atom has 6 electron shells.
Phosphorus in is 3rd period. So it has 3 electron shells.
There can only be 1 outer energy level.
Berkelium has seven electron shells.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
see what period it is in on the periodic table it is in period 6, so therefore there are 6 electron shells or energy levels
Copernicium has 7 electron shells.
Plutonium has 7 electron shells.
Promethium has six electron shells.
Copernicium has 7 electron shells.
Tin has five electron shells.
Caesium has six electron shells.
Berkelium has seven electron shells.
Livermorium has 7 electron shells.
Actinium has seven electron shells.