In which of the following molecules do all the atoms lie in one plane?

Which of the following is $NOT$ likely to act as a Lewis base?

Which of the following statement$(s)$ is/are correct?

Which of the following sets are correctly matched?

Molecule	Number of lone pairs of electrons on central atom	Hybridization
$I. PCl_3$	$1$	$sp^3$
$II. SO_2$	$1$	$sp^2$
$III. SF_4$	$1$	$sp^3d$
$IV. ClF_3$	$2$	$sp^3d$

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 $XeF_4$.

Born-Haber cycle may be used to calculate:
$I$. $\Delta_{eg}H$
$II$. Mass number
$III$. Electronegativity
$IV$. Lattice energy