Question

Q1. Arrange the following in the increasing order of the property mentioned:
a). CaH 2 , BeH 2 , TiH 2 (electric conductance).
b). H― H, F― F , D― D. (Bond dissociation energy).
Q2. Stability of peroxides and super oxides of alkali metals increases as we go down the group. Explain by giving reason.

Answer 1

Explanation:

CaH

2

, BeH

2

and TiH

2

in order of increasing electrical conductance.

(ii) LiH,NaH and CsH in order of increasing ionic character.

(iii) H−H,D−D and F−F in order of increasing bond dissociation enthalpy.

(iv) NaH,MgH

2

and H

2

O in order of increasing reducing property.