Why were noble gases said to have no electronegativity?

1 Answer

Answer:

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

Explanation:

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.

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