Предмет: Химия, автор: настя7418

определите валентность химических элементов по формулах их соединения;NН3,AICI3,Cr2O3,Na3O.

Ответы

Автор ответа: tbajguzin

N[III]H3I, Al[III]Cl[I]3, Cr2[III]O3[II], Na3[I]O[III]

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