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.
What determines the electron distribution between two atoms in a bond?   The electronegativity of each atom; that is, the ability of the atom to withdraw electrons. Electronegativity tends to increase as you go up and to the right of the peâ¦riodic table, with fluorine having the highest electronegativity.