$N_2$ is less reactive than $CN^{-}$ due to

Positive dipole moment is present in

The dipole moment of $HCl$ is $1.03 \ D$. If the $H-Cl$ bond distance is $1.26 \ \mathring{A}$,what is the percentage of ionic character in the $H-Cl$ bond? ............. $\%$

Which bond is more polar in the following pairs of molecules: $(a)$ $H_3C-H, H_3C-Br$ $(b)$ $H_3C-NH_2, H_3C-OH$ $(c)$ $H_3C-OH, H_3C-SH$

Explain why $BeH_{2}$ molecule has a zero dipole moment although the $Be-H$ bonds are polar.

Which of the following has the maximum dipole moment?