The mechanism of action of probiotics (e.g., having an impact on the intestinal microbiota or enhancing immune function) was dropped from the definition to encompass health effects due to novel mechanisms and to allow application of the term before the mechanism is confirmed.
Noun. 1. electronegativity - (chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond. negativity.
3 Answers. Electronegativity is a measure of how strongly the nucleus of a given element attracts electrons toward itself. On the periodic table there are two trends: as you go from left to right in a given period the electronegativity increases; and as you go down a group the electronegativity decreases. Both trends are due to the structure of the atom.