In $XeO_3F_2$,the number of bond pair$(s)$,$\pi$-bond$(s)$ and lone pair$(s)$ on $Xe$ atom respectively are:

Which one of the following molecules contains no $\pi$ bond?

Which of the following statements is incorrect?
$(i)$ $NaCl$,being an ionic compound,is a good conductor of electricity in the solid state.
$(ii)$ In canonical structures,there is no difference in the arrangement of atoms.
$(iii)$ Hybrid orbitals form stronger bonds than pure orbitals.
$(iv)$ $VSEPR$ theory can explain the square planar geometry of $XeF_4$.

Among the following molecules,the $N-Si$ bond length is shortest in:

Observe the following sets:

Label	Order	Property
$i.$	$NH_3 > H_2O > SO_2$	Bond angle
$ii.$	$H_2O > NH_3 > H_2S$	Dipole moment
$iii.$	$N_2 > O_2 > H_2$	Bond enthalpy
$iv.$	$NO^{+} > O_2 > O_2^{2-}$	Bond order

Which of the above sets are correctly matched?

The incorrect order is