Question

why do you think the electronegativity of He, Ne and Ar is 0

Answer 1

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Answer 2

The electronegativity values for elements like helium (He), neon (Ne), and argon (Ar) are considered to be very proximate to 0. This is because electronegativity is a quantification of an element's facility to magnetize electrons in a chemical bond when it composes compounds with other elements.

In the case of noble gases like He, Ne, and Ar, they are known for their very stable and unreactive electron configurations. These elements have full valence electron shells (He has 2 electrons in its first shell, Ne has 2 and 8 electrons in its two shells, and Ar has 2, 8, and 8 electrons in its three shells), which denotes their electron shells are already thoroughly filled.

Because these noble gases have no vigorous propensity to gain or lose electrons, their electronegativity values are proximate to 0. Essentially, they don't yarely participate in chemical bonding, so their electronegativity values reflect their inert and nonreactive nature.

In the context of the Pauling scale, which is commonly used to quantify electronegativity, most elements have values more preponderant than 0 because they have a proclivity to magnetize electrons when composing chemical bonds. However, noble gases are an exception due to their stable electron configurations.