February 2019 1 15 Report
1. Jika diketahui massa atom relative (Ar) dari Na = 23, O = 16, H = 1, berapakah massa dari 0,2 mol NaOH?
a. 0,8 gram
b. 8,0 gram
c. 80 gram
d. 88 gram
e. 18 gram

2. Unsur dengan nomor atom 20, memiliki konfigurasi electron….
a. 2, 8, 8,2
b. 2, 8,10
c. 2, 8, 8,1,1
d. 2, 2, 8,8
e. 2, 8,8,0,1
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