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Why does pottasium and calcium have configuration of 2,8,8,1 and 2,8,8,2 instead of 2,8,9 and 2,8,10

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Potassium and calcium have a configuration of 2,8,8,1 and 2,8,8,2 instead of 2,8,9 and 2,8,10 because of max 2,6 electrons filled in s,p orbitals respectively.

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sudhir.kumar

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