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Be (berylium) berylium

Mg (magnesium) magnesium

Ca (calcium) calcic

Sr (strontium) strontium

Ba (barium) baryum

Ra (radium) radium

All the elements' general valence electron configuration is ns2 "n" is a number from 2 (for Be) to 7 (for Ra).

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What characteristic does the alkali metals alkaline earth metals and the halogens have in common?

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