In which of the following processes is energy absorbed?
- A$Cl + e^- \to Cl^-$
- B$O^- + e^- \to O^{2-}$
- C$O^{2-} - e^- \to O^-$
- D$Na^+ + e^- \to Na$
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For electron affinity of halogens,which of the following is correct?
The correct order of electron affinity is
Which of the following electron affinity orders is incorrect?
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View SolutionThe electron affinities of halogens are $F = 322, Cl = 349, Br = 324, I = 295 \ kJ \ mol^{-1}$. The higher value for $Cl$ as compared to that of $F$ is due to :-
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View SolutionWhen an electron is added to elements of group $16$ and $17$ in $n = 2$ and $n = 3$ shells,which case experiences less electron-electron repulsion and why?
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