the electron affinity of fluorine is less than chlorine ?
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Fluorine, though higher than chlorine in the periodic table,has a very small atomic size. This makes the fluoride anion so formed unstable (highly reactive) due to a very high charge/mass ratio. Also, fluorine has no d-orbitals, which limits its atomic size. As a result, fluorine has an electron affinity less than that of chlorine.
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Electron affinity is less of Fluorine than chlorine, this is because though electronegativity of fluorine and thus the attraction rate towards electrons is greater for Fluorine than Chlorine, however, Fluorine is not capable of finally keeping the electron in it's shells.
This is because it has no vacant orbitals and suppose if it gains an electron, it will very unstable since there would be large electron electron repulsion. And thus, the Electron Affinity of Fluorine will be more negative.
However, Chlorine has d-vacant Orbitals in which it can easily take up electrons and keep them without any vigorous electron electron interaction.
This is because it has no vacant orbitals and suppose if it gains an electron, it will very unstable since there would be large electron electron repulsion. And thus, the Electron Affinity of Fluorine will be more negative.
However, Chlorine has d-vacant Orbitals in which it can easily take up electrons and keep them without any vigorous electron electron interaction.
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