1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion: Noble gases have positive electron affinity. Reason: Noble gases have stable closed shell electronic configuration.

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Q. Assertion: Noble gases have positive electron affinity.
Reason: Noble gases have stable closed shell electronic configuration.

AIIMSAIIMS 2010

Solution:

Noble gases have stable closed shell electronic configuration. Thus, in order to add an electron to an isolated noble gas atom, energy have to given. Hence, noble gases have positive electron affinity. Hence, Reason: is correct for Assertion:.