Question

Which of the following is a strong oxidising agent ?
(At. No. Mn = 25, Zn = 30, Cr = 24, Sc = 21)
(A)Mn3+
(B)Zn3+
(C)Cr3+
(D)Sc3+
​

Answer 1

option c is correct answer

hope you get it

Answer 2

The Correct answer is Option (A) i.e Mn³⁺

It has a half-filled stable configuration.

Explanation:

(A)Mn³⁺  -- At. No. Mn = 25 electronic conf. [Ar],3d⁴,4s⁰

(B)Zn³⁺   -- At. No. Zn = 30 electronic conf. [Ar],3d⁹,4s⁰

(C)Cr³⁺ -- At. No. Cr = 24 electronic conf. [Ar],3d³,4s⁰

(D)Sc³⁺ -- At. No. Sc = 21 electronic conf. [Ar],3d⁰,4s⁰

Mn³⁺  is the strong oxidizing agent because it has a half-filled stable configuration.

Option (A) i.e Mn³⁺ is answer