Which of the following has the highest electron affinity?

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.

admin:

Related Questions

  1. 5 mL of N HCl, 20 mL of N/2 H₂SO₄ and 30 mL of N/3 HNO₃ are mixed together
  2. The gas molecules have r.m.s. velocity of its molecules as 1000 m/s
  3. Which of the following order is wrong?
  4. Which of the following is obtained when sodium phenoxide is heated with ethyl
  5. If active mass of a 6% solution of a compound is 2, its molecular weight will be