Why do you think the noble gases do not have electronegativity values?

Answer 1

The noble gases have outer electron shells that are completely full. Therefore, they do

do not form ordinary compounds and a different method has to be used to define their electronegativity.

Electronegativity for noble gases have been determined using the Allred-Rochow scales. Their values are :

He=5.50, Ne=4.84, Ar=3.20, Kr=2.94, Xe=2.40.

The Mulliken-Jaffe scale lists their electronegativities as:

He=3.49, Ne=3.98, Ar=3.19, Kr=3.00, Xe=2.73, Rn=2.59 (F=3.91, H=2.25).

The Allen electronegativity scale (Spectroscopic electronegativity scale) lists the EN of noble gases as

He=4.16, Ne=4.79, Ar=3.24, Kr=2.97, Xe=2.58 (F: 4.19, H: 2.30).

The modern high level ab initio calculations indicate that neon is surprisingly less reactive than helium. The reactivity order is Ne < He < Ar < Kr < Xe < Rn

Answer 2

As seen from the Periodic Table, the noble gases are located at the far right. This shows they are in group 8, meaning they have 8 electrons in their outermost energy level. 8 electrons in the outermost energy level means that they are stable elements. Electronegativity is the ability of an atom in the element to attract the electrons. They do not need to have any more electrons added to their outermost energy level because they are already stable. Now elements in group 7A, will need to have 1 more electron in their outermost energy level to become stable; the whole point is become like a noble gas; to have 8 electrons in the outermost energy level and therefore become stable.

Answer 3

b'cos noble gases have complete outtermost shell so they does not requires to gain or to lose elctrons .so, they do not have any electronegativity values or electropositivity values

Answer 4

Noble gases doesn't gain/lose electrons.