What is electronegativity and what is its periodic trend?

1 Answer
Nov 13, 2014

Electronegativity is the tendency of an atom or a functional group to attract electrons towards itself (http://en.wikipedia.org/wiki/Electronegativity). The electronegativities of the elements tend to increase from left to right across a period, and increase from bottom to top up a group.

http://www.drcruzan.com/PeriodicTrends.html

Francium is the least electronegative element, and fluorine is the most electronegative element.