In the case of alkali metals, the covalent character decreases in the order

1. MCl > MI > MBr > MF

2. MF > MCl >  MBr > MI 

3. MF > MCl > MI > MBr

4. MI > MBr > MCl > MF

The correct order of the dipole moment of the following molecules is : 

Mark the incorrect order of the bond angle:

1. NH₃ > NF₃

2. NF₃ <  PF₃

3. NH₃ > PH₃

4. NH₃ > H₂O

In which case observed dipole moment is greater than theoretical dipole moment?

1.

2.

3.

4.

A molecule having the maximum dipole moment among the following is -

1. CO₂

2. CH₄

3. NH₃

4. NF₃