The number of statements correct among the following is:

(A) Cerium(IV) acts as an oxidizing agent in acidic solution.
(B) Cerium(III) is a reducing agent.
(C) The highest oxidation state of Cerium i

Question

The number of statements correct among the following is:

(A) Cerium(IV) acts as an oxidizing agent in acidic solution.
(B) Cerium(III) is a reducing agent.
(C) The highest oxidation state of Cerium is +4.
(D) Cerium(IV) in acidic solution is a stronger oxidizing agent than .

Canvas Classes · Accepted Answer

Cerium (Ce, Z=58):

A. Ce(IV) acts as oxidising agent in acidic solution — TRUE ✓

() readily gains 1 electron →  () → strong oxidising agent.

B. Ce(III) is a reducing agent — TRUE ✓

() can lose 1 electron →  (, noble gas config) → reducing agent.

C. Highest oxidation state of Ce is +4 — TRUE ✓

Ce can lose all 4 valence electrons () → +4 is the highest O.S.

D. Ce(IV) in acidic solution is a stronger oxidising agent than  — TRUE ✓

V   V

All 4 statements are correct.

Answer: Option (4)

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