NEET Chemistry The p-Block Elements (XII) Questions Solved

BOARD

(a) Using VSEPR theory predict the probable structures of the following :

(i) N2O3                                (ii) BrF3

(b) Arrange the following groups of substances in the order of the property indicated against each group :

(i) NH3, PH3, AsH3, SbH3 - increasing order of boiling points.

(ii) O, S, Se, Te - increasing order of electron gain enthalpy with negative sign.

(iii) F2, Cl2, Br2, I2 - increasing order of bond dissociation enthalpy.

 

(a) (i) N2O3

(b) BrF3

(b) (i) PH3<AsH3<NH3<SbH3

(ii) O<Te<Se<S

(iii) The increasing order of bond dissociation enthalpy is :

Cl2>Br2>F2>I2

Difficulty Level:

  • 75%
  • 17%