Why are noble gases not assigned electronegativity values?

Related questions

1. Which element in Period 4 has the highest electronegativity?
2. What is Electropositivity and electronegativity?
3. How does nuclear charge affect electronegativity?
4. Why chlorine is more electronegative than fluorine?
5. What is true electronegativity?
6. Which is more electronegative N or O?
7. Which of the following occurs when an ionic bond is formed?
8. Why do metals have low electronegativity?
9. What is meant by electronegativity?
10. How does electronegativity affect oxidation?

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3. #attract
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6. #outer
7. #measures
8. #noble
9. #their
10. #amount
11. #shells
12. #gases
13. #already
14. #since
15. #electronegativity
16. #attraction