August 2018 1 14 Report
Dik nomor atom Ca : 20, Cu : 29, K : 19, Ti : 22, Zn : 30. Ion dibawah ini yg tidak punya elektron pasangan adalah
Ca2+
Cu2+
K+
Ti4+
Zn2+

Mohon bantuannya ya, sekalian jalannya ( difoto pun gapapa, yg penting jelas )

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