7.27 Give two examples to show the anomalous behaviour of fluorine.
We see anomalous behaviour of fluorine and this is because of its small size, highest electronegativity, very low F-F bond dissociation enthalpy, and non-availability of d orbitals in the valence shell.
1. ionisation enthalpy, electronegativity, and electrode potentials are all higher for fluorine than expected from the trends set by other halogens
2.ionic and covalent radii, melting point and boiling point., enthalpy for bond dissociation and electron gain enthalpy are very much lower than expected
3. Fluorine shows only an oxidation state of –1 due to non-availability of d-orbitals in its valence shell.