Given below are two statements — Assertion A and Reason R:

Assertion A: is more acidic than .

Reason R: Bond dissociation enthalpy of is lower than .

Choose the most appropriate answer:

Question

Given below are two statements — Assertion A and Reason R:

Assertion A:  is more acidic than .

Reason R: Bond dissociation enthalpy of  is lower than .

Choose the most appropriate answer:

Canvas Classes · Accepted Answer

Step 1 — Evaluate Assertion A:
Acidity of  (Group 16 hydrides) increases down the group:

This is because bond strength decreases down the group → easier to release H⁺.
A is true ✓

Step 2 — Evaluate Reason R:
Bond dissociation enthalpy decreases down the group (Te–H bond is weaker than S–H bond).
Weaker bond → easier to break → more acidic.
R is true ✓

Step 3 — Is R the correct explanation?
Yes — the lower bond dissociation enthalpy of  directly explains why it is more acidic (easier to releas

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