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MHT CET202415 May 2024Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which element from following combines with hydrogen to form a compound with lowest thermal stability?

Options

  1. AF
  2. BCl
  3. CI
  4. DBr

Correct answer

C. I

Step-by-step solution

The bond dissociation enthalpy of H - X bond decreases in the order: HF HCl HBr HI . Therefore, thermal stability of hydrogen halides also decreases in the order: HF HCl HBr HI Iodine combines with H to form a compound with lowest thermal stability.

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