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MHT CET202522 Apr 2025Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following is the molecular formula of halous acid of chlorine?

Options

  1. AHClO
  2. BHClO ₂
  3. CHClO ₃
  4. DHClO ₄

Correct answer

B. HClO ₂

Step-by-step solution

The oxyacids of chlorine include hypochlorous acid HClO , chlorous acid HClO ₂ (also known as halous acid), chloric acid HClO ₃ , and perchloric acid HClO ₄ . Halous acid corresponds specifically to chlorous acid, whose molecular formula is HClO ₂ . Final answer: B

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