September 2018 1 107 Report
A. ion M3+ mempunyai 10 elektron dan 14 neutron berapakah nomor massa unsur M ?
b. Ion A2- mempunyai elektron ,berapakah nomor atom unsur A
c. Ion B2+ mempunyai 12 proton,berapakah nomor atom unsur B ?
pliisa tolong djwb
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