PCl₅ acts as

1. Reducing agent

2. Oxidising agent

3. Dehydrating Agent

4. None of the above.

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-

The group which contains the strongest oxidizing agent is-

1. Group 15

2. Group 16

3. Group 17

4. Group 18

 Halogen that forms only one oxoacid is :

1. Chlorine

2. Fluorine

3. Bromine

4. Iodine

\(\mathrm{Xe}+\mathrm{PtF}_6 \rightarrow \text { ? }\)

The product of the above reaction is:

In which compound does phosphorous have the lowest oxidation state?

1. H₃PO₃ 

2. PCl₃ 

3. Ca₃P₂ 

4. POF₃

 A xenon fluoride that does not exist is:

1. XeF₄
2. XeF₂
3. XeF₃
4. XeF₆

(a) XeF₆ + 3H₂O →

(b) XeF₆ + H₂O $\to$

The products formed in the above reactions, respectively, are:

1. XeO₃ , XeOF₄
2. XeO₆ , XeOF₄
3. XeO₃, XeOF₆
4. XeO₆ , XeOF₆

Arrange the following compounds in increasing order of their acidity:
HF, HCl, HBr, HI 

1. HCl < HBr < HI<HF  

2. HF < HCl < HI< HBr

3. HF < HCl < HBr < HI

4. HF< HBr < HI< HCl 

XeF₄ is isostructural with :

1. ${\mathrm{ICl}}_4^{-}$       

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

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

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