Compare the dipole moments of the compounds in each fo the following sets. `BF_3` and `BCl_3

Compare the dipole moments of the compounds in each fo the following sets. SO_2 and CO_2

The dipole moment of CH_3X (where X is a halogen) follows the order

Identify the Lewis acids from the following: OH^- , BCl_3 , NH_3 , H^+

Select the molecule or ion having larger property mentioned in each of the following pairs: a) NF3, NH3 ;dipole moment b) NH3, PH3 ;bond angle c) CO2, BF3 ;bond angle.

Account for the following: BF_3 is planar but NH_3 is not.

The correct order of hybridisation of the central atom in the following species: 'NH_3, [PtCl_4]^(2-)PCl_5' and 'BCl_3' is