Chemical Bondin...

Physical properties of compound depend on:

Which theory is useful to determine geometrical structure of molecules ? 

In which of the following pairs , the hybridisation of central atmos  is same but molecular geometry is not the same ? 

Number of $$  (\sigma)-  $$ bonds present in $$ \mathrm{CH}_{4} $$ is:

Which of the following statement is incorrect?

In the following  i. $$ N_2 \rightarrow N^+_2 \quad ii. O_2 \rightarrow O^+_2 ;\quad $$the electrons respectively are removed from 

In which of the following the experimental dipole moment is more  than what is expected from theory 

Correct order of dipole moment is :
1) I = II = III              2) I < II < III
3) I > II > III              4) II < III < I

Number of lone pair present in each molecule of $$H_2O , NH_3$$ and $$C_2H_4$$ respectively.