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MHT CET202123 Sep 2021Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which element from following combines with hydrogen to form compound having lowest acidic strength?

Options

  1. ACl
  2. BBr
  3. CF
  4. DI

Correct answer

C. F

Step-by-step solution

Down the group the electronegativity decreases and the size increases. Thus, it becomes easy to lose H ⁺ ion. This causes the increase in acidic strength down the group. Acidic strength order: HF < HCl < HBr < HI

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