Discuss the structures of (i) `SF_(6)` (ii) `SF_(4)`

On the basis of hybridisation, discuss the structures of (i) PCl_(5) (ii) IF_(7) (iii) SF_(6) .

The structure of SF_(4) is

The structrue of SF_(4) is

Draw the Lewis structure for SF_6 .

Draw the structures of the following molecules : (i) SF_(4) (ii) XeF_(4)

How many of the following compounds violate octet rule (i) BrF_(5) (ii) SF_(6) (iii) IF_(7) (iv) XeOF_(4) (v) CIF_(2) (vi) PCI_(4)^(o+) .

Give reasons for the following observations : Why SF_(4) undergoes hydrolysis but not SF_(6) ? Or SF_(6) is inert towards hydroysis. SF_(6) is much less reactive than SF_(4) . Or (i) SF_(4) is easily hydrolysed whereas SF_(6) is not easily hydrolysed. (ii) Sulpher exhibits greater tendency for calenation than selenium. (iii) Sulpher has a higher tendency for catenation than oxygen.

(a) What is resonance ? Write resonance structures of carbon doxide molecule. (b) Using the concept of hybridisation explain the shapes of (i) C_(2)H_(4) and (ii) C_(2)H_(2) molecules. (c ) State the type of hybrid orbitals associated with (i) P in PF_(5) and (ii) S in SF_(6)