This is a chemical element. You can find the how many electron in a single atom by using a Periodic Table.
Hassium has seven electron shells.
The possible electron configuration of hassium is [Rn]5f14.6d6.7s2.
The electron configuration of hassium is: [Rn]5f14.6d6.7s2.
Bromine has 4 electron shells.
Polonium has 6 electron shells.
Magnesium has three electron shells. The electron configuration is 2,8,2
Sodium, i believe has 3 shells.
A sulfur atom has 3 electron shells.
The electron configuration for hassium (Hs) is [Rn]5f146d67s2.
Uranium has 92 electrons, which means it has 7 electron shells.
The correct number of electron clouds or shells sodium has is 3.
A bismuth atom has 6 electron shells.