What does electronegative mean?
Electronegative is an adjective used chiefly in chemistry to describe an atom's tendency to attract electrons toward itself when bonded to other atoms. Elements like fluorine and oxygen are described as highly electronegative because they pull shared electrons strongly in their direction, a property measured on scales such as Pauling's electronegativity index. The term can also refer more generally to something bearing a negative electric charge. Because it belongs mostly to scientific register rather than everyday conversation, it rarely appears outside textbooks, laboratory reports, and technical discussions. Its counterpart, electropositive, denotes the opposite tendency — a willingness to surrender electrons. Understanding electronegativity helps explain fundamental phenomena such as why water molecules are polar, why some bonds are covalent while others are ionic, and how reactivity varies across the periodic table, making this word essential vocabulary for anyone studying the chemical sciences.
adjectiveHaving a tendency to attract electrons toward itself; carrying or relating to a negative electric charge. In chemistry, an electronegative element such as fluorine strongly draws bonding electrons to itself.
- (of an atom or element) having a strong tendency to attract bonding electrons toward itself
- carrying or producing a negative electric charge
"Fluorine is the most electronegative of all the elements, pulling shared electrons almost entirely toward itself."
"Oxygen is more electronegative than hydrogen, which is why water molecules are polar."
"The electronegative electrode drew the positive ions across the solution."
Fluorine tops the electronegativity charts so fiercely that chemists measure everything else's electron-hunger against it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of electronegative
Electronegative combines 'electro-', from the Greek 'ēlektron' meaning amber (the substance in which static electricity was first observed), with 'negative', ultimately from Latin 'negativus'. The term emerged in the nineteenth century alongside the development of electrochemistry as scientists sought to explain why certain elements attract electrical charge differently. It shares its electro- root with words like electrode and electrolysis.
Related word forms
How electronegative is actually used
Primarily a technical term used in chemistry and physics; rare in everyday speech. The noun form 'electronegativity' is more commonly encountered in scientific writing.
Easily confused with electronegative
Electronegative describes an atom that attracts electrons, while electropositive describes one that readily gives them up.