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n. the tendency, or a measure of the ability, of an atom or molecule to attract electrons and thus form bonds

n. (chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond

"The disparity in electronegativity values between the oxygen and the phosphorus (3.5 for O compared to 2.1 for P), along with the formal charges on 3 of the 4 oxygens, compounded with the oxygen atoms having electron lone pairs makes this molecule pretty reactive."

tendency    inclination   

Pauling scale    Mulliken scale   

electronegative    electropositivity   

sub-channel    sieving    polarizability    spreadability    nonnegative