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electronegativity
(redirected from electronegative)

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electronegativity

A measure for the ease with which an atom can attract electrons to itself. Electronegative elements attract electrons, so forming negative ions.

US chemist Linus Pauling devised an electronegativity scale to indicate the relative power of attraction of elements for electrons. Fluorine, the most non-metallic element, has a value of 4.0 on this scale; oxygen, the next most non-metallic, has a value of 3.5.

In a covalent bond between two atoms of different electronegativities, the bonding electrons will be located close to the more electronegative atom, creating a dipole.


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Fluorine atoms are highly electronegative, which gives the CF bond a large dipole moment.
The ALAD 2 allele has been shown to modify the toxicokinetics of lead by coding for a more electronegative enzyme that may bind positively charged lead ions more tightly than does the ALAD-1 protein (Wetmur 1994; Wetmur et al.
174 TRAYLOR PS,J CHEM S CH,vol ,page 0279,1984,cites= 23,STERICALLY PROTECTED HEMINS WITH ELECTRONEGATIVE SUBSTITUENTS - EFFICIENT CATALYSTS FOR HYDROXYLATION AND EPOXIDATION
 
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