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MHT CET202525 Apr 2025Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following is existing oxoacid of fluorine?

Options

  1. AHOF
  2. BHFO ₂
  3. CHFO ₃
  4. DHFO ₄

Correct answer

A. HOF

Step-by-step solution

The only known oxoacid of fluorine is hypofluorous acid, HOF. Due to fluorine's extreme electronegativity, it cannot exhibit positive oxidation states in oxoacids like other halogens. In HOF, fluorine maintains its typical -1 oxidation state, hydrogen is +1 , and oxygen is 0 . For other compounds such as HFO ₂ , HFO ₃ , and HFO ₄ , fluorine would need to adopt positive oxidation states ( +3 , +5 , and +7 respectively), which contradicts its chemical behavior. Thus, the correct option is A .

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