Arrange the following in the decreasing order of their bond enthalpy: $H_2, O_2, N_2$.

Which of the following pairs of molecules contains an odd-electron molecule and an expanded octet molecule?

Arrange the bonds in order of increasing ionic character in the molecules: $LiF$,$K_2O$,$N_2$,$SO_2$,and $ClF_3$.

What are the formal charge on each oxygen atom and the $P-O$ bond order in the $PO_4^{3-}$ ion,respectively?

Which of the following represents the correct order of boiling point?

Which of the following statement$(s)$ is/are correct? [$T$ for True and $F$ for False$]$
$(a)$ Hybrid orbitals form stronger bonds than pure atomic orbitals.
$(b)$ Canonical structures have a difference in the arrangement of atoms $w.r.t.$ each other.
$(c)$ Any symmetrical molecule always contains the same bond angle.
$(d)$ $VSEPR$ theory can explain the square planar geometry of $XeF_4$.