Question

What electron pattern do you notice for all of the elements belonging to the Alkali Metal family?

Answer 1

See the explanation.

Explanation:

All of the alkali metals (group 1/IA) have a single valence electron in their highest energy s sublevel. This makes them very reactive.

`"Li":` `"1s"^2color(red)("2s"^1")`

`"Na":` `"1s"^2"2s"^2"2p"^6color(red)("3s"^1)`

`"K":` `"1s"^2"2s"^2"2p"^6"3s"^2"3p"^6color(red)("4s"^1)`

`"Rb":` `"1s"^2"2s"^2"2p"^6"3s"^2"3p"^6"3d"^(10)"4s"^2"4p"^6color(red)("5s"^1)`

`"Cs":` `"1s"^2"2s"^2"2p"^6"3s"^2"3p"^6"3d"^(10)"4s"^2"4p"^6"4d"^10"5s"^2"5p"^6color(red)("6s"^1)`