Which of the following has the highest electron affinity?

Which Of The Following Has The Highest Electron Affinity Chemistry QuestionWhich Of The Following Has The Highest Electron Affinity Chemistry Question

Which of the following has the highest electron affinity?

Options

(a) F⁻
(b) O⁻
(c) O
(d) Na

Correct Answer:

O

Explanation:

As the size of atom decreases, a larger amount of energy is released when an elctrn is added to an isolated gaseous atom. Among the given species, the size of O atom is smallest (Since, size of parent atom is smaller as compared to its anion), thus its elctrn affinity is highest.

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