How many compounds are formed by covalency?
How many compounds are formed by electrovalency?
How many covalent bonds are present in the following compounds?
How many covalent bonds are formed in Cl2, O2 and N2 molecules?
Balance the following chemical equation.
Na + O2 → Na2O
Ca + N2 → Ca3N2
N2 + H2 →NH3
CaCO3 +HCl → CaCl2 + CO2 +H2O