Test: General Properties of Group-16 - JEE MCQ

On heating ozone, we get:

∴ Volume increases to 3/2 times

is not peroxy compound)

At anode :
Peroxo sulphate on hydrolysis, produces .

2Ag₂O(s) ⟶ 4Ag(s)+O₂( g)
2 Pb₃O₄(s) ⟶ 6PbO(s) + O₂( g)
2PbO₂(s) ⟶ 2PbO(s) + O₂( g)

Bond strength → Double bond > Partial double bond > single bond
Bond length → Double bond < < Single bond
So, Bond length (0−0) order is → O₂ < O₃ < H₂O₂ 

Oxygen shows and +2 oxidation states.
(i) Oxygen shows -2 oxidation states in most of its compound while it shows ( - 1) O.S. in peroxides (like ), +1 in and +2 in .
Thus, it show and +2 oxidation states.
(ii) The thermal stability of and follows the order This is because, on going down the group, the size of the central atom increases and therefore, its tendency to form stable covalent bond with hydrogen decreases. As a result, the bond strength decreases and therefore, thermal stability decreases.
(iii) The reducing nature of and Te follows the order

This is due to the decrease in thermal stability of the hydride greater the unstability of hydrides, the greater is its reducing character.