Give two examples in each case:

a)coordinate bond compounds

b)Solid covalent compounds

c)gaseous polar compounds

d)gaseous non-polar compounds(other than F2.Cl2,Br2,I2,At2)

e)liquid non-polar compounds 

f)Two examples of salts which are hygroscopic

g)Two important uses of Washing soda

Coordinate bond compounds: NH⁺₄, H₃O⁺

Solid covalent compounds: Diamond, Boron nitride, Silicon carbide

Gaseous polar compounds: H₂S, PH₃, NH₃

Gaseous non-polar compounds: Methane (CH₄), Ethylene (C₂H₄)

Liquid non-polar compounds: Gasoline, Toluene

Two examples of salts which are hygroscopic: Zinc chloride, Sodium hydroxide

Two important uses of Washing soda:

1. Washing soda can remove grease, blood, ink, tea and coffee stains.

2. A regular solution of washing soda and warm water will brighten venetian blinds, and help repel dust.