TS EAMCET · Chemistry · Chemical Bonding and Molecular Structure

The type of bonds present in sulphuric anhydride are

A \(3 \sigma\) and three \(p \pi-d \pi\)
B \(3 \sigma\), one \(p \pi-p \pi\) and two \(p \pi-d \pi\)
C \(2 \sigma\) and three \(p \pi-d \pi\)
D \(2 \sigma\) and two \(p \pi-d \pi\)

Verified Solution

Answer & Solution

Correct Answer

(B) \(3 \sigma\), one \(p \pi-p \pi\) and two \(p \pi-d \pi\)

Step-by-step Solution

Detailed explanation

Sulphuric anhydride is \(\mathrm{SO}_3\) and its structure is as follows : \(\Rightarrow 3 \sigma, 1 p \pi-p \pi, 2 p \pi-d \pi\) bonds are present.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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