Polar Covalent Compounds

Q.

Non-polar covalent compounds ionise in water.

1. False

2. True

Q.

Compounds in which the shared pair of electrons is unequally shared between the reacting atoms are called a___ compound.

Q. The following compounds are non-polar except _______.

1. $N{H}_3$
2. $N_2$
3. $C{l}_2$
4. $O_2$

Q. Electrovalent compounds are soluble in water and insoluble in organic solvents.

1. False
2. True

Q. Choose the correct pairs of compounds and their types.

1. Polar covalent
2. Non-polar covalent
3. Ionic
4. $\text{NaCl}$
5. $\text{HCl}$
6. ${\text{N}}_2$

Q. Choose the molecule which exhibits polar character.

1. $H_{2}O$
2. $C{l}_2$
3. $B{r}_2$
4. $O_2$

Q. The following compounds are non-polar except _______.

1. $C{l}_2$
2. $O_2$
3. $N_2$
4. $N{H}_3$

Q. Which of the following bond has the most polar character?

1. C - F
2. C - S
3. C - O
4. C - Br

Q.

Complete the following :

(a) When the nuclei of two different reacting atoms are of ......... mass, then a bond so formed is called ...................... covalent bond (equal, unequal, polar, non-polar).

(b) In case of non-polar covalent bond, the covalent bond is formed in the .......... of atoms and shared electrons are ........... distributed (corner, middle, equally, unequally)

(c) The ions in ................ compounds are held very strongly due to strong ............ forces (electrovalent, covalent, electromagnetic, electrostatic).

Q.

(a) Name two compounds that are covalent when taken pure but produce ions when dissolved in water.

(b) For each compound mentioned above, give the formulae of ions formed in aqueous solutions.