(a)(1) Define covalent bond.

(ii) Give two properties of covalent compounds

(ii) With the aid of a diagram, show how ammonia molecule is formed

(iv) Illustrate with a diagram the formation of ammonium ion?

(v) What type of bond(s) exist(s) in I. ammonia, H. ammonium ion? (\(_1\)H\(_7\)N)

 

(b)(i) Write three subatomic particles with their corresponding relative masses. CH\(_2\)OH

(ii) Name the possible states in which water can exist.

 

(c) (i) State Graham's law of diffusion

(ii) Arrange the following gases, He, CH\(_4\) and N\(_2\) in order of increasing rates of diffusion. Give a reason for the order. [ H = 1, He = 4, C = 12, N = 14 ]

 

(d) Draw the structures of the following compounds:

(i) 2,3-dimethylbutane;

(ii) 1,4-dibromocyclohexane.