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

BOARD

(a) Draw the structures of the following molecules :

(i) $XeO{F}_{4}$                               (ii) ${H}_{2}S{O}_{4}$

(b) Write the structural difference between white phosphorus and red phosphorus.

(a) (i) $XeO{F}_{4}$

Shape : Square pyramidal

(ii) ${H}_{2}S{O}_{4}$

Shape : Tetrahedral structure

(b) White phosphorus exists as discrete ${P}_{4}$ units with $S{P}^{3}$ hybridized phosphorus atom, arranged tetrahedrally but in red phosphorus all ${P}_{4}$ tetrahedral units are linked with each other to form polymeric structure.

White phosphorus

Red phosphorus

Difficulty Level: