Tolong nomor 3,4,dan5

3. 19 K =2, 8, 8, 1
20 Ca =2, 8, 8, 2
17 Cl = 2, 8, 7
35 Br = 2, 8, 16, 8, 1
4. jumlah orbital pada sub kulit
S = 2
P = 6
D = 10
F = 14
5. pada kulit K = 2
M = 16

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