Jwaban Post Test 1.docx

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1. Konfigurasi elektron yang benar untuk 24 Cr adalah... A. 1s2 2s2 2p6 3s2 3p6 4s2 3d4 B. 1s2 2s2 2p6 3s2 3p6 3d4 4s2 C. 1s2 2s2 2p6 3s2 3p6 4s2 3d4 D. 1s2 2s2 2p6 3s2 3p6 4s1 3d5 E. 1s2 2s2 2p6 3s2 3p6 3d2 4f6

2. Konfigurasi elektron X2- dari suatu ion unsur 16 X adalah ... A. 1s2 2s2 2p6 3s2 2p2 B. 1s2 2s2 2p6 3s2 3p4 C. 1s2 2s2 2p6 3s2 3p6 D. 1s2 2s2 2p6 3s2 3p6 3d2 E. 1s2 2s2 2p6 3s2 3p2 3d2

3.

Konfigurasi elektron unsur yang bernomor atom 23 adalah….

A. 1s22s22p63s23p64s24p3 B. 1s22s22p63s23p64s23d24p1 C. 1s22s23s23p64s5 D. 1s22s22p63s23p64s23d3 E. 1s22s22p63s23p63d5 4.

Diketahui nomor atom unsur Ca=20. Konfigurasi elektron ion Ca2+ adalah….

A. 1s22s22p22p63s2 B. 1s22s22p63s23p6 C. 1s22s22p63s13p4 D. 1s22s22p63s13p6 E. 1s22s22p63s13p64s23d3

5.

Unsur X memiliki nomor atom 35. Konfigurasi elektron ion X– adalah….

A. 1s22s22p63s23p63d104p5 B. 1s22s22p63s23p63d104s24p6 C. 1s22s22p63s23p63d104s24p55s1 D. 1s22s23s23p63d104s24p4 E. 1s22s22p63s23p63d104s14p5

6. Jika diketahui konfigurasi elektron atom X 1s 2s 2p 3s 3p 4s 3d 4p . Nomor atom X adalah…. A. 40 2

B. 34 C. 38 D. 35 E. 36

2

6

2

6

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