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29X = 1s2 2s2 2p6 3s2 3p6 4s2 3d9
62X = 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f6
29 = 2 8 18 1
62 = 2 8 18 18 8 8 2
sorry kalo salaah