1) надо степень окисления и валентность PH3, NaI, ZnF2, H2S, CaCl2.2)Определите ...

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1) надо степень окисления и валентность PH3, NaI, ZnF2, H2S, CaCl2.
2)Определите тип связи в элементе KCl, Br2, K2S, I2, BCl3, H2, SnH4, N2, LiF, Cl2.

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ildus4 3 + + 7. 2+ 7. + 4. 2+ -
ph3. Nal znf2. h2s. cacl2
валентность и степень окисление

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