The electronic formula of an alkali metal?

Alkali metals are lithium, sodium, potassium, rubidium, cesium, francium.

Lithium electronic configuration: 1s2 2s1

Sodium: 1s2 2s2 2p6 3s1

Potassium: 1s2 2s2 2p6 3s2 3p6 4s1

Rubidium: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s1

Cesium: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s1

Francium: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 7s1



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