Question

1. Example for polar covalent bond [ ]a) H2b) Cl 2c) O2d) HCl2. Another name for covalent bond [ ]a) Electrovalent bond b) Electron pair bond c) Electro static bond d) All the above3. Covalent bond was explained by [ ]a) Kossel b) Lewis c) Pauling d) Lavoiser4. Covalent compounds are soluble ins [ ]a) Ether b) Benzene c) CCl4d) All the above5. Example for non-polar covalent compounds [ ]a) H2b) N2c) F2d) All the above6. Which of the following compounds are rigid and directional [ ]a) Ionic compounds b) Covalent compoundsc) Both a and b d) None7. Among the following, which can exhibits isomerism [ ]a) Ionic compounds b) Covalent compoundsc) Metallic compounds d) All the above8. The molecules having single covalent bond [ ]a) O2b) N2c) CO2d) Cl29. The molecule which do not obey octet rule is [ ]a) H2O b) NH3c) PCl5d) CO210. The number of electron pairs shared between two nitrogen atoms in N2 molecule is [ ]a) 2 b) 3 c) 4 d) 1​

Answer 1

Explanation:

Hydrogen chloride is a diatomic molecule consisting of H atom and Cl atom connected by a covalent single bond. Since the Cl atom is much more electronegative than the hydrogen atom, the covalent bond between two atoms is quite polar. Bonds which have large electronegativity difference like HCl, have partially ionic and partially covalent character called polar covalent bonds.