A) \[{{H}_{2}}S<{{H}_{2}}Se<{{H}_{2}}Te\]
B) \[{{H}_{2}}Se<{{H}_{2}}S<{{H}_{2}}Te\]
C) \[{{H}_{2}}Te<{{H}_{2}}S<{{H}_{2}}Se\]
D) \[{{H}_{2}}Se<{{H}_{2}}Te<{{H}_{2}}S\]
Correct Answer: A
Solution :
| Acidic strength of hydrides increases as the size of central atom increases which weakens the MH bond. Since, the size increases from S to Te thus acidic strength follows the order |
| \[{{H}_{2}}S<{{H}_{2}}Se<{{H}_{2}}Te\] |
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