Question

noble gases have zero electron affinity values ?​

Answer 1

Explanation:

Electron affinity of an element is the energy released when an element in the gas phase gains an extra electron to form an anion. Noble gases have a completely filled valence shell and does not require any extra electron to become stable and so has a zero electron affinity.

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Answer 2

Answer:

becoz Noble gases are self sufficient and they are not need in forming bond.