# which is the symbol for an element whose ground state atoms have the same total numbers of s electrons and p electrons ?

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which is the symbol for an element whose ground state atoms have the same total numbers of s electrons and p electrons ?
A. _(5)B
B. _(6)C
C. _(12)Mg
D. _(18)Ar

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Mgto 1s^(2)2s^(2)2p^(6)3s^(2)