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.
Electronegativity Difference and Bond Character Covalent bond - a shared pair of electrons between two atoms Electronegativity - the ability of an atom to attract electrons in a covalent bond. Electronegativity Difference, E, E = E1-E2, For example, each HââO bond in H2O has: E = EO - EH E = 3.44 - 2.10 E = 1.44. As the electronegativity difference grows from 0.00 to >3.00, the sharing of electrons becomes more skewed. First one atom becomes partially negative, -, while the other becomes partially positive, +, and the bond is polarized, a polar covalent bond.