How would you arrange these elements in order of decreasing electronegativity: N, Al, Na, P?

1 Answer
Jun 4, 2018

#" Na, Al, P, N"#
#stackrelrarr"Increasing electronegativity"#


As we FACE the Periodic Table....electronegativity INCREASES across a Period, a row of the Periodic Table....and DECREASES down a Group, a column of the Periodic Table....

Here you gots a 2nd Period non-metal, which should be the most electronegative element. then a 3rd Period non-metal, which should be the next most electronegative, and then a couple of metals, one that is STRONGLY ionic in character... You grab?

As always, electronegativity is a function of unshielded nuclear charge, and is formally the ability of an atom involved in a chemical bond to polarize electron density towards itself.