(a) Draw the structures of the following molecules ;
(b) Explain the following observations :
(i) Nitrogen is much less reactive than phosphorus.
(ii) Despite having greater polarity, hydrogen fluoride boils at a lower temperature than water.
(iii) Sulphur has greater tendency for catenation than oxygen in the same group.
(a) (i) :
Shape : T-shape
(b) (i) Because P-P bond is weaker than NN bond, is inert due to the presence of triple bond.
(ii) In water O is larger than F therefore Vander-Waals forces of attraction increase with increase in size and hence the boiling point increases.
(iii) It is because S-S bond is stronger than O-O bond as there is more interelectronic repulsion in
O-O than in S-S.