${\mathrm{PCl}}_5$ is highly unstable and in solid state it exists as into ${\left[{\mathrm{PCl}}_4\right]}^{+} \mathrm{and} {\left[{\mathrm{PCl}}_6\right]}^{-}$ ions.
The geometry of ${\left[{\mathrm{PCl}}_6\right]}^{-}$ is

1.  Octahedral

2.  Tetrahedral

3.  Square pyramidal

4.  Square planar

In ${\mathrm{PO}}_4^{3-}$ ion, the formal charge on each oxygen atom and P-O bond order respectively are : 

1.  -0.75, 0.6

2.  -0.75, 1.0

3.  -0.75, 1.25

4.  -3.1, 1.25

The correct order of increasing bond angles in the following species is

1.  ${\mathrm{Cl}}_2\mathrm{O} < {\mathrm{ClO}}_2 < {\mathrm{ClO}}_2^{-}$

2.  ${\mathrm{ClO}}_2 < {\mathrm{Cl}}_2\mathrm{O} < {\mathrm{ClO}}_2^{-}$

3.  ${\mathrm{Cl}}_2\mathrm{O} < {\mathrm{ClO}}_2^{-} < {\mathrm{ClO}}_2$

4.  ClO₂^- < Cl₂O < ClO₂

Which of the following pairs of ions is isoelectronic and isostructural?

1.  ${\mathrm{CO}}_3^{2-}, {\mathrm{NO}}_3^{-}$

2.  ${\mathrm{CIO}}_3^{-}, {\mathrm{CO}}_3^{2-}$

3.  ${\mathrm{SO}}_3^{2-}, {\mathrm{NO}}_3^{-}$

4.  ${\mathrm{CIO}}_2^{-}, {\mathrm{SO}}_3^{2-}$

The correct geometry and hybridization for XeF₄ are : 

1.  Octahedral, sp³d²

2.  Trigonal bipyramidal, sp³d³

3.  Planar triangle, sp³d³

4.  Square planar, sp³d²

Which of the following pairs of species have the same bond order?

1. $O_2^{-},N{O}^{+}$

2. $C{N}^{-},CO$

3. $N_2, O_2^{-}$

2. CO,NO

Predict the correct order of repulsions among the following:

Match the compounds given in Column I with the hybridization and shape given in Column II and mark the correct option. 

In which of the following pairs, both the species are not isostructural?

1. SiCl_4, ${\mathrm{PCl}}_4^{+}$

2. Diamond, silicon carbide

3. $N{H}_3, P{H}_3$

4. $Xe{F}_4,Xe{O}_4$