Write lewis structure of the following compounds and show formal charge each atom.

3

(a)

Write the resonance structures for  NO₂

3

(a)

What is meant by the term average bond enthalpy? Why is there difference in bond enthalpy of  O - H bond in ethanol (C₂H₅OH) and water?

3

(a)

Give reasons for the following.
Water molecule has bent structure whereas carbon dioxide molecule is linear.

3

(a)

Predict the hybridisation of each carbon in the molecule of organic compound given below. Also indicate the total number of \(\sigma \ and \ \pi \)-bonds in this molecule.

3

(a)