Определите валентность элементов в следующих соединениях: NH3, ZnO, Al2O3, KBr, OsO4,
TiO2, Na2O, I2O5, CrO3, Ca3P2, Na3N, Mn2O7, BaH2, PbO2, Au2O3, PH3.
TiO2, Na2O, I2O5, CrO3, Ca3P2, Na3N, Mn2O7, BaH2, PbO2, Au2O3, PH3.
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NH3 - N(III) H(I)ZnO - Zn(II) O(II)
Al2O3 - Al(III) O(II)
KBr - K(I) Br(I)
OsO4 - Os(VIII) O(II)
TiO2 - TI(IV) O(II)
Na2O - Na(I) O(II)
I2O5 - I(V) O(II)
CrO3 - Cr(VI) O(II)
Ca3P2 - Ca(II) P(III)
Na3N - Na(I) N(III)
Mn2O7 - Mn(VII) O(II)
BaH2 - Ba(II) H(I)
PbO2 - Pb(IV) O(II)
Au2O3 - Au(III) O(II)
PH3 - P(III) H(I)