State reasons for each of the following :
(i) All the P-Cl bonds in `PCl_5` molecule are not equivalent.
(ii) Sulphur has greater tendency for catenation than oxygen.

Cl-P-Cl bond angles in PCl_5 molecule are

Explain the bond lengths of all P-Cl bonds in PCl _(5) molecule.

Explain the following situations : (ii) Sulfur exhibits greater tendency for catenation than selenium.

(a)How is ammonia prepared on a large scale ? Name the process and mention the optimum conditions for the production of ammonia by this process. (b) Assign reasons for the following : (i) H_(2)S is more acidic than H_(2)O (ii) NH_(3) is more basic than PH_(3) (iii) Sulphur has a greater tendency of catenation than oxygen

(a) Draw the molecular structures of the following compounds : (i) N_(2)O_(5) " " (ii) XeOF_(4) (b) Explain the following observations : (i) Sulphur has a greater tendency for catenation than oxygen. (ii) ICI is more reactive than I_(2) . (iii) Despite lower value of its electron gain enthalpy with negative sign, fluorine (F_(2)) is a stronger oxidizing agent than Cl_(2) .

Draw the structures of the following : (i) H_(2)S_(2)O_(8) (ii) HClO_(4) (b) How would you account for the following : (i) NH_(3) is a stronger base than PH_(3) . (ii) Sulphur has a greater tendency for catenation than oxygen. (iii) F_(2) is stronger oxidising agent than Cl_(2) .

Account for the following : (i) NH_(3) is a stronger base than PH_(3) (ii) Sulphur has a greater tendency for catenation than oxygen. (iii) Bond dissociation energy of F_(2) is less than that of Cl_(2) .

Which of the following bond angle is not observed in PCl_(5) molecule in gaseous state?

(a) Draw the molecular structure of following compounds : (i) XeF_(6) (ii) H_(2)S_(2)O_(8) (b) Explain the following observations : (i) The molecules NH_(3) and NF_(3) have dipole moments which are of opposite direction. (ii) All the bonds in PCl_(5) molecule are not equivalent. (iii) Sulphur in vapour state exhibits paramagnetism.

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.