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

(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) .

(A) Complete the following chemical equations : (i) Cu+HNO_(3) (dilute) to (ii) XeF_(4)+O_(2)F_(2)to (B) Explain the following observations: (i) Phosphorous has greater tendency for catenation than nitrogen. (ii) Oxygen is a gas but sulphur is a solid. (iii) The halogens are coloured. Why ?

Explain the following observations: (i) Phosphorus has a greater tendency for catenation than nitrogen (ii) The negative value of electron gain enthalpy is less for fluorine than for chlorine. (iii) Hydrogen fluoride has a much higher boiling point than hydrogen chloride

(a) Draw the structures of the following : (i) XeF_(4) (ii) H_(2)S_(2)O_(7) (iii) SO_(3)^(2-) (b) Explain the following observations : (i) Phosphorous has a greater tendency for catenation than nitrogen. (ii) The negative value of electron gain enthalpy is less for fluorine than that for chlorine. (iii) Hydrogen fluoride has a much higher boiling point than hydrogen chloride.

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.

Explain why: Sulphur exhibits tendency for catenation but oxygen does not.

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.

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) .

Explain the following observations : (i) Fluorine does not exhibit any positive oxidation state. (ii) The majority of known noble gas compounds are those of Xenon. (iii) Phosphorus is much more reactive than nitrogen.