September 2018 1 20 Report
Jumlah neutron dalam molekul HNO₃ adalah...
a. 26
b. 31
c. 43
d. 56
e. 70

Di antara ion-ion berikut yang tidak ada adalah...
a. Ca²⁺ (aq)
b. Na²⁺ (aq)
c. Mg²⁺ (aq)
d. Fe²⁺ (aq)
e. Zn²⁺ (aq)

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