October 2018 1 29 Report
Nomor atom beberapa unsur adalah : N =7 F=9 Ne=10 Na =11 Al=13 Cl=17 K=19 Br=35 Rb=37.pasangan spesi berikut yang bersifat isoelektronik adalah

A. N^-3 & Na
B. Na^+ & F
C. Al^3+ & Cl^-
D. Rb^+ & Br^-
E. K^+ & Ne

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