Определи валентность элементов в веществах:
S H2, Р2O5, СаS, TiO2, SO3, SO2, FeO, HCl, N2O5,
S H2, Р2O5, СаS, TiO2, SO3, SO2, FeO, HCl, N2O5,
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Объяснение:
S(II)H(I)
P(V)O(II)
Ca(II)S(II)
Ti(IV)O(II)
S(VI)O(II)
S(IV)O(II)
Fe(II)O(II)
H(I)Cl(I)
N(V)O(II)