In each chemical formula, knowing the oxygen valence, determine the valence
| September 11, 2021 | education
In each chemical formula, knowing the oxygen valence, determine the valence of the second element: a) H2O, CO2, SIO2, N2O5 b) P2O5, SO2, Cl2O7 c) CO, NO, MnO2
Oxygen is always bivalent.
a) H2O – H (hydrogen) – monovalent, CO2 – C (carbon) – tetravalent, SiO2 – Si (silicon) – tetravalent, N2O5 – N (nitrogen) – pentavalent;
b) P2O5 – P (phosphorus) – pentavalent, SO2 – S (sulfur) – tetravalent, Cl2O7 – Cl (chlorine) – heptavalent;
c) CO – C (carbon) – divalent, NO – N (nitrogen) – divalent, MnO2 – Mn (manganese) – tetravalent.
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