ANOMALOUS BEHAVIOUR OF FLUORINE
Fluorine shows an anomalous behavior with the other
elements of group 17. The following are some of the anomalous characteristics of fluorine.
- Fluorine is the most reactive of all the halogens because it has low bond dissociation energy.
- Fluorine is different from other elements of halogens because it
- has a small atomic size
- has high electronegativity
- has non-availability of d-orbitals in its valence shell.
- It shows only a negative oxidation state of -1 due to the maximum electronegativity of fluorine and the absence of d-orbital.
- It does not show any positive oxidation state. The other elements of group 17 show negative as well as positive oxidation states of +1, +3, +5, and +7.
- Due to the small atomic size and high electronegativity of fluorine. HF bonds become stronger and difficult to break making HF less acidic than other hydrogen halides.
- Due to the absence of d-orbitals, it does not form polyhalide ions while other halogens form polyhalide ions.
Tags
Inorganic Chemistry