Question

Which of the following statements are correct? I. Reaction of bromine with excess fluorine gives a T-shaped compound. II. Iodine oxides decompose on heating. III. Roasting of sulphide ores gives \(\mathrm{SO_2}\) as a byproduct. The correct answer is

• A. I, II only
• B. II, III only
• C. I, III only
• D. I, II, III

Hint:

Remember: \[ \boxed{ \mathrm{BrF_3} \rightarrow \text{T-shaped} } \] \[ \boxed{ \mathrm{BrF_5} \rightarrow \text{Square pyramidal} } \] Roasting of sulphide ores always liberates \[ \boxed{\mathrm{SO_2}.} \]

Answer 1

The Correct Option is B

Step 1: Check Statement-I. Bromine reacts with excess fluorine to form \[ \mathrm{BrF_5}, \] which has a \[ \boxed{\text{square pyramidal}} \] shape and not a T-shaped geometry. Hence, \[ \boxed{\text{Statement-I is incorrect}.} \]

Step 2: Check Statement-II. Iodine oxides are thermally unstable and decompose on heating. Hence, \[ \boxed{\text{Statement-II is correct}.} \]

Step 3: Check Statement-III. During roasting, \[ \mathrm{Metal\ sulphide + O_2 \rightarrow Metal\ oxide + SO_2.} \] Therefore, \[ \boxed{\mathrm{SO_2}} \] is evolved as a byproduct. Hence, \[ \boxed{\text{Statement-III is correct}.} \] Thus, \[ \boxed{(B)} \] is the correct answer.