alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.
Structurally, they have in common an outer s- electron shell which is full. that is, this orbital contains its full complement of two electrons, which these elements readily lose to form cautions with charge +2, and an oxidation state of +2.
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