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Consider the following statements: (I) `Li^(+) (aq)` is greater in size than `Cs^(+) (aq)` (II) `H - F` is more thermal stable than HI. maleic acid is more acidic than fumaric acid. The correct statements are -A. I and IIIB. II aloneC. I and IID. I, II and III |
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Answer» Correct Answer - D (i) Size in aqueous medium `prop` hydration energy hydration energy `prop (1)/("size of cation")` (ii) `H - F " " H - 1` `1s - 2p " " 1s - 5 p` strength order `1s - 2p gt 1s - 5 p` so thermal stablity of `HF gt HI` |
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