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Electronegativity (EN)
Electronegativity is a measure of electron pull. In a bond, the more electronegative element will pull electrons closer towards itself
Example: Draw the bond between H and F and show the difference in electronegativity.
Electronegativity Values
Wize Tip
General order of EN may come in handy:
F > O > Cl > N > Br > I > S > C ~ H
The Periodic Trend
Electronegativity increases going up and to the right in the periodic table.
Which atom is the most electronegative?
F
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Example: Increasing Electronegativity
Rank the following atoms in increasing electronegativity: O, Al, Sr, N, Si, Cs
Cs < Sr < Al < Si < N < O
Practice: Ranking Electronegativity
Choose the option which correctly ranks the following elements in terms of electronegativity.
