This is a chemical element. You can find the how many electron in a single atom by using a Periodic Table.
2
0
4
There are no unpaired electrons in strontium.
Strontium has 4 valence electrons.
two
2
5
There are no unpaired electrons in strontium.
There are 3 unpaired electrons.
zero - there are no unpaired electrons
three unpaired electrons
6 unpaired electrons
A silicon atom has 4 unpaired electrons.
3 unpaired electrons
they're are zero unpaired electrons.
5 unpaired electrons There are 5 unpaired electrons in the Fe3+ ion. The reason for this is that Iron has the electron configuration Ar3d5.
There are 5 unpaired electrons in Fe^3+ in its ground state.
Cesium has 1 unpaired electron.
Strontium has 4 valence electrons.