What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

nS²

According to the periodic law, elements that fall into the same group have similar properties.

All the alkaline earth metals are in group two of the periodic table. The have 2 electrons in their outermost shell. In the SPDF electronic configuration the ground state of all alkaline earth have S² two electrons in their outermost S sublevel.

Example the electronic configuration of some alkaline earth metals are

Beryllium [He] 2S²

Magnesium is [Ne] 3S² and

Calcium is [Ar] 4S²

the general electronic configuration for alkaline earth metals is nS²

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2b2t

explanation:

2b2t