Write the name of monomers and their structure in the following:

(i) Buna – S

(ii) Terylene

(iii) Nylon – 6

Give reasons:

A. Red phosphorus is less reactive than white phosphorous

B. Sulphur shows greater tendency for catenation than oxygen.

C. ClF₃ is known but FCl₃ is not known.

Complete the following reactions:

(i) Write the name of Monosaccharides which are obtained after the hydrolysis of lactose

(ii) What type of bonding is responsible for the stability of α – helix?

(iii) Write the difference between nucleotide and nucleoside.

A. For the complex . Write the hybridization, magnetic character and spin of the complex. ( Z = 27)

B. Why is the complex more stable than the complex ?