Which of the following is not present in ${\mathrm{XeO}}_3$ molecule ?

$1. {\mathrm{sp}}^3 + {\mathrm{p}}_{\mathrm{x}}$
$2. {\mathrm{sp}}^3 + {\mathrm{p}}_{\mathrm{y}}$
$3. {\mathrm{d}}_{\mathrm{xz}} +\hspace{0.17em}{\mathrm{p}}_{\mathrm{x}}$
$4. {\mathrm{sp}}^3 +\hspace{0.17em}\mathrm{s}$

The incorrect order of lattice energy is :

$1. {\mathrm{AIF}}_3 > {\mathrm{MgF}}_2$
$2. {\mathrm{Li}}_3\mathrm{N} > {\mathrm{Li}}_2\mathrm{O}$
$3. \mathrm{NaCl} > \mathrm{LiF}$
$4. \mathrm{TiC} > \mathrm{ScN}$

The bond angles of  NH₃, NH₄⁺ and NH₂^-  are in the order :

1. NH₂^- > NH₃ > NH₄⁺

2. ${\mathrm{NH}}_4^{+}>{\mathrm{NH}}_3>{\mathrm{NH}}_2^{-}$

3. ${\mathrm{NH}}_3>{\mathrm{NH}}_2^{-}>{\mathrm{NH}}_4^{+}$

4. ${\mathrm{NH}}_3>{\mathrm{NH}}_4^{+}>{\mathrm{NH}}_2^{-}$

The "O-N-O" bond angle is maximum in 

1. ${\mathrm{N}}_2\mathrm{O}$

2. ${\mathrm{NO}}_2^{+}$

3. ${\mathrm{NO}}_2^{-}$

4. ${\mathrm{NO}}_3^{-}$

The correct statement regarding $S{O}_2$ molecule is-

1. Two $p\mathrm{\pi }-\mathrm{d\pi }$ bonds

2. Molecules has 2 lone pair, 2$\sigma$ bonds and 2$\pi$ bonds

3. Two $p\pi -p\pi$ bonds

4. One $p\pi -p\pi$ and one $p\mathrm{\pi }-\mathrm{d\pi }$ bond

Calculate the maximum ionic character possible in a bond between two atoms in the periodic table according to Hanny Smith equation. [Electronegativeity of Li=1.0, Na=0.9, K=0.8, Rb=0.8, Cs=0.7, Fr=0.7]

1.  $~90\%$

2.  $~97\%$

3.  $~80\%$

4.  $~75\%$

${\mathrm{AsF}}_5$ molecule is trigonal bipyramidal. The hybrid orbitals used by As-atoms for bonding are

1.  ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}, {\mathrm{d}}_{{\mathrm{z}}^2}, \mathrm{s}, {\mathrm{p}}_{\mathrm{x}}, {\mathrm{p}}_{\mathrm{y}}$

2.  ${\mathrm{d}}_{\mathrm{xy}}, \mathrm{s}, {\mathrm{p}}_{\mathrm{x}}, {\mathrm{p}}_{\mathrm{y}}, {\mathrm{p}}_{\mathrm{z}}$

3.  $\mathrm{s}, {\mathrm{p}}_{\mathrm{x}}, {\mathrm{p}}_{\mathrm{y}}, {\mathrm{p}}_{\mathrm{z}}, {\mathrm{d}}_{{\mathrm{z}}^2}$

4.  ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}, \mathrm{s}, {\mathrm{p}}_{\mathrm{x}}, {\mathrm{p}}_{\mathrm{y}}, {\mathrm{p}}_{\mathrm{z}}$

Choose the incorrect statement among the following.

1.  $\mathrm{HF}$ is the most volatile acid among $\mathrm{HX}$.

2.  ${\mathrm{Na}}_2{\mathrm{O}}_2$ is having ionic and covalent type of bonds.

3.  ${\mathrm{CH}}_3{\mathrm{CO}}_2\mathrm{Na}$ is having identical $\mathrm{C}-\mathrm{O}$ bond lengths while it is not true for ${\mathrm{CH}}_3{\mathrm{CO}}_2\mathrm{H}$.

4.  p-p overlap is more stronger compared to s-s overlap in axial type of bond formation.

Mark the molecular species, among the following, that is not electron-deficient:

1.  ${\mathrm{AlCl}}_3$

2.  ${\mathrm{BeH}}_2$

3.  ${{\mathrm{BH}}_4}^{-}$

4.  ${\mathrm{BF}}_3$

In which of the following molecule the intramolecular hydrogen bonding is not existing.

1.  Chloral hydrate

2.  O-chlorophenol

3.  Choral

4.  Salicylic acid