Chemistry - PERIODIC TABLE Question with Solution | TestHub

ChemistryPERIODIC TABLEMiscellaneous/MixedMedium2 minPYQ_2024

ChemistryMediumsingle choice

Electron affinity is positive, when

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Solution:

When $O^{-}$ changes into $O^{2 -}$ , energy is absorbed i.e the change is endothermic because $O^{-}$ repels the incoming electron due to similar charge. H ice, it needs energy to add (accept) the electron. So, electron affinity $(EA_{2})$ is positive.

Stream:BITSATSubject:ChemistryTopic:PERIODIC TABLESubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2024

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