Classification Of Elements And Periodicity In Properties Ques 233

Question: The process requiring the absorption of energy is [Roorkee 1990]

Options:

A) $ F\to {{F}^{-}} $

B) $ Cl\to C{{l}^{-}} $

C) $ O\to {{O}^{2-}} $

D) $ H\to {{H}^{-}} $

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Answer:

Correct Answer: C

Solution:

The second I.E. is greater than first I.E. similarly second E.A. is greater than first E.A. the energy is to be supplied to force the second $ {{e}^{-}} $ into the anion.



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