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Chemistry · PYQ NEET UG 2018

हिन्दी

Which of the following statements is NOT true for halogens?

  1. All form monobasic oxyacids.
  2. All are oxidizing agents.
  3. All but fluorine show positive oxidation states.
  4. Chlorine has the highest electron-gain enthalpy.

Correct answer · Option 1

All form monobasic oxyacids.

Explanation

Fluorine is the most electronegative and has no d-orbitals, but chlorine actually has the highest negative electron-gain enthalpy, making statement 4 true while some oxoacids like periodic acid can be polybasic.

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