У Н стала валентність I
У О стала валентність II
Li2O=Li(I)O(II)
Cr2O3=Cr(III)O(II)
CrO3=Cr(VI)O(II)
PbO2=Pb(IV)O(II)
FeO=Fe(II)O(II)
Fe2O3=Fe(III)O(II)
SiO2=Si(IV)O(II)
HgO=Hg(II)O(II)
K2O=K(I)O(II)
Mn2O7=Mn(VII)O(II)
SO3=S(VI)O(II)
Cl2O7=Cl(VII)O(II)
SiH4=Si(IV)H(I)
PH3=P(III)H(I)
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Answers & Comments
У Н стала валентність I
У О стала валентність II
Li2O=Li(I)O(II)
Cr2O3=Cr(III)O(II)
CrO3=Cr(VI)O(II)
PbO2=Pb(IV)O(II)
FeO=Fe(II)O(II)
Fe2O3=Fe(III)O(II)
SiO2=Si(IV)O(II)
HgO=Hg(II)O(II)
K2O=K(I)O(II)
Mn2O7=Mn(VII)O(II)
SO3=S(VI)O(II)
Cl2O7=Cl(VII)O(II)
SiH4=Si(IV)H(I)
PH3=P(III)H(I)