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NEET2002ChemistryClassification of Elements and Periodicity in PropertiesActual

Which of the following statement is true?

Options

  1. ASilicon exhibits 4 coordination numbers in its compound
  2. BBond energy of F ₂ is less than Cl ₂
  3. CMn (III) oxidation state is more stable than Mn ( II ) in an aqueous state
  4. DElements of 15 th group show only +3 and +5 oxidation states

Correct answer

B. Bond energy of F ₂ is less than Cl ₂

Step-by-step solution

Fluorine is an exception due to its extremely small size. The F-F bond length is so short that the lone pairs of electrons on the fluorine atoms repel each other and weakens the F-F bond. The order of Bond energy is, Cl ₂> Br ₂> F ₂> I ₂

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