1. Unsur mempunyai
konfigurasi electron…
a. 1s22s22p63s23p63s1 d. 1s22s22p63s23p64s1
b. 1s22s22p63s23p64s13d104p65s24d1 e. 1s22s22p63s23p64s23d104p65s25p1
c. 1s22s22p63s23p53s5
a. 1s22s22p63s23p63s1 d. 1s22s22p63s23p64s1
b. 1s22s22p63s23p64s13d104p65s24d1 e. 1s22s22p63s23p64s23d104p65s25p1
c. 1s22s22p63s23p53s5
2. Konfigurasi electron unsure X yang bernomor atom 29 adalah…
a. (Ne)3s23p64s23d9 d. (Ne)3s23p54s23d9
b. (Ne)3s23p64s13d10 e. (Ne)3s23p54s13d10
c. (Ne)3s23p54s23d10
3. Diketahui nomor atom Fe = 26, konfigurasi electron ion Fe3+ adalah….
a. 1s22s22p63s23p64s23d6 d. 1s22s22p63s23p64s13d4
b. 1s22s22p63s23p63d5 e. 1s22s22p63s23p63d6
c. 1s22s22p63s23p64s23d3
4. Nomor atom S = 16, maka konfigurasi electron ion sulfide (S2-) adalah…
a. 1s22s22p63s23p2 d. 1s22s22p63s23p43d2
b. 1s22s22p63s23p4 e. 1s22s22p63s23p44s2
c. 1s22s22p63s23p6
5. Jumlah electron maksimum yang dapat menempati orbital-orbital subkulit f adalah…
a. 2 d. 7
b. 3 e. 14
c. 6
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