Question

Consider the following statements about the oxides of halogens 
A. At room temperature, OF₂; is thermally stable 
B. Order of stability of oxides of halogens is I > Br > Cl 
C. I₂O₅ is used in the estimation of CO 
D. ClO₂; is used as a bleaching agent 
The correct statements are

• A. A & B only
• B. A,B & C only
• C. B & C only
• D. A,C & D only

Answer 1

The Correct Option is D

Step 1: Understand the Statements:
We are given four statements about the oxides of halogens. Let's analyze them one by one:

Statement A: At room temperature, OF₂ is thermally stable.
This statement is incorrect. OF₂ is highly reactive and thermally unstable, decomposing easily at room temperature into oxygen and fluorine.

Statement B: The order of stability of oxides of halogens is I > Br > Cl.
This statement is correct. As we move down the halogen group, the oxides of iodine are more stable than those of bromine and chlorine. Iodine is the least electronegative halogen, leading to more stable oxides.

Statement C: I₂O₅ is used in the estimation of CO.
This statement is correct. Iodine pentoxide (I₂O₅) is used as an oxidizing agent in the estimation of carbon monoxide (CO).

Statement D: ClO₂ is used as a bleaching agent.
This statement is correct. Chlorine dioxide (ClO₂) is widely used as a bleaching agent, especially in paper and textile industries.

Step 2: Analyze the Correctness of Each Statement:
- Statement A is incorrect.
- Statement B is correct.
- Statement C is correct.
- Statement D is correct.

Final Answer:
The correct statements are B, C, and D. 
Therefore, the correct option is A, C, and D only.