Question
Why does fluorine show anomalous behaviour?

Answer

Fluorine exhibits anomalous behaviour as compared to other halogens in the group.

The reasons for anomalous behaviour of fluorine are as follows :
  • the smallest size of fluorine
  • the highest electronegativity
  • low bond dissoClation enthalpy of F-F bond
  • non-availability of d-orbitals in its valence shell.

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