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MHT CET202617 April 2026Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which from following compounds has lowest thermal stability?

Options

  1. AIBr
  2. BBrCl
  3. CBrF
  4. DClF

Correct answer

C. BrF

Step-by-step solution

The thermal stability of interhalogen compounds of the type XY with respect to disproportionation follows the order: ClF > ICl > IBr > BrCl > BrF Bromine monofluoride ( BrF ) is highly unstable and rapidly undergoes disproportionation at room temperature to form bromine trifluoride and bromine: 3BrF BrF₃ + Br₂ Because of its high tendency to decompose, BrF has the lowest thermal stability among the given options.

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