1) Konfigurasi elektron dari atom Ca dengan nomor atom 20 adalah.... a) 2, 8, 10 b) 2, 10, 8 c) 2, 6, 8, 4 d) 2, 8, 8, 2 e) 2, 6, 6, 6 2) Atom ln dengan nomor atom 49 memiliki konfigurasi elektron.... a) 2, 8, 18, 21 b) 2, 8, 18, 2, 1 c) 2, 8, 18, 8, 8, 5 d) 2, 8, 18, 8, 8, 3, 2 e) 2, 8, 18, 18, 3 3) Diketahui 7N, 8O, 9F, 11Na, dan 12Mg. Yang mempunyai elektron valensi tertinggi adalah... a) N b) O c) F d) Na e) Mg 4) Unsur dibawah ini yang memiliki elektron valensi sama, kecuali... a) 4Be b) 7N c) 12Mg d) 20Ca e) 38Sr
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KONFIGURASI ELEKTRON
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Harihariheboh
PT
Kimia
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