JEE Main Chemistry question
How many of the following trends is/are CORRECT with respect to the properties of hydrides of group 16 elements? 1. Bond angle: 2. Volatility: 3. Thermal stability: 4. Acidic strength:
Answer: 3
Solution
(1) Bond angle genuinely decreases down the group (104.5° → ~90°) — CORRECT. (2) Boiling points are actually , because 's boiling point is anomalously raised by hydrogen bonding; so volatility (inversely related to bp) is actually highest for ,
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