Chemistry, 29.07.2019 17:00 IIHarmonyII

#1: which element has the same number of energy levels as bromine (br) and the same number of valence electrons as barium (ba)? a. potassium (k) b,. beryllium (be) c. cadmium (cd) d. calcium (ca) ***not too sure on this is it d. calcium (ca)

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