In solid-state, PCl₅ exists as: 

1.	Covalent solid.
2.	Octahedral structure.
3.	Ionic solid with [PCl6]+ octahedral and [PCl4]- tetrahedral.
4.	Ionic solid with [PCl4]+ tetrahedral and  [PCl6]- octahedral.

Match the items in Columns I and II and mark the correct option.

Codes:

Which of the following is incorrect regarding noble gases?

1. The atomic radii corresponds to van der Waal’s radii.

2. They have the largest size in a period.

3. They are also called inert gases.

4. They combine to form molecules.

XeF₄ is isostructural with :

1. ${\mathrm{ICl}}_4^{-}$       

2. ${\mathrm{IBr}}_2^{-}$                   

3. ${\mathrm{BrO}}_3^{-}$

4. ${\mathrm{ICl}}_3^{-}$

 A xenon fluoride that does not exist is:

1. XeF₄
2. XeF₂
3. XeF₃
4. XeF₆

In which compound does phosphorous have the lowest oxidation state?

1. H₃PO₃ 

2. PCl₃ 

3. Ca₃P₂ 

4. POF₃

The electron gain enthalpy values for O → O^– and O → O^2– are –141 and 702 kJ  mol^-1 , respectively. The correct statement about the formation of oxides is-

PCl₅ acts as

1. Reducing agent

2. Oxidising agent

3. Dehydrating Agent

4. None of the above.