Why were noble gases said to have no electronegativity?

1 Answer

Noble gases do have an electronegativity. Pauling just didn't have them at first because one thing he needed was homonuclear bond energies.


All the noble gases except helium and neon form compounds with highly electronegative elements.

Chemists have been able to calculate their electronegativities as

#"Ar = 3.2, Kr = 3.0, Xe = 2.6, Rn = 2.6"#.

The calculated electronegativity of #"Ne"# is 4.8.

Here's a Periodic Table that includes the electronegativities of the noble gases.

(Adapted from Inorganic Chemistry, Miessler et al., 5th ed., pg. 58)