Question

With what compound will NH3 experience only dispersion intermolecular forces? 

HCN 

C3H7OH 

KBr 

SIO2 

CH3F

Answer 1

1) with SiO2 ammonia experience dispersion forces only with other molecules it experience dipole dipole attractions because all other molecules are polar.

Dispersion forces are temporary forces developed when temporary polarity developed in non polar molecules due to movement of electrons.

Dispersion forces present in all types of molecules. Majorly in nonpolar molecules.

Ans) SiO2