October 2018 1 38 Report
Suatu atom unsur dg no massa 31, memiliki 15 neutron dan 16 elektron. Atom tersebut dpt membentuk ion bermuatan ....

a. -3
b.-2
c.-1
d. +2
e. +3

(isi ya yg tau,aku bingung dg jawaban ku sendiri :v)

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