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Ok. I understand Co3+ =[Ar]3d6. No electrons in the 3s orbital. So, the # of the outermost valence electrons is 6 in the 3d orbital only!
What if Co1+? Co1+=[Ar]4s13d7. So the # of the outermost valence elctrons is 1 in the 4s orbital? or 8(one in the 4s, 7 in the 3d)?
What if Co1+? Co1+=[Ar]4s13d7. So the # of the outermost valence elctrons is 1 in the 4s orbital? or 8(one in the 4s, 7 in the 3d)?