Q35. Which of the following pairs of transition metal ions is the strongest oxidizing agent?

Q: What is the correct answer for CUET UG Chemistry Q35?

The correct answer is d. An oxidizing agent is a substance that accepts electrons and gets reduced in the process. We are looking for the pair of ions that are most readily reduced (i.e., strong oxidizing agents).Let's analyze the common oxidation states and electronic configurations:(a) Fe²⁺ ([Ar]3d⁶) and Mn²⁺ ([Ar]3d⁵): Both Fe²⁺ and Mn²⁺ are relatively stable ions. Mn²⁺ with its half-filled d⁵ configuration is particul

Q: Q35. Which of the following pairs of transition metal ions is the strongest oxidizing agent?

The correct answer is d. An oxidizing agent is a substance that accepts electrons and gets reduced in the process. We are looking for the pair of ions that are most readily reduced (i.e., strong oxidizing agents).Let's analyze the common oxidation states and electronic configurations:(a) Fe²⁺ ([Ar]3d⁶) and Mn²⁺ ([Ar]3d⁵): Both Fe²⁺ and Mn²⁺ are relatively stable ions. Mn²⁺ with its half-filled d⁵ configuration is particul

Q: What are the options for this CUET UG Chemistry question?

A. Fe²⁺ and Mn²⁺ · B. Cu²⁺ and Ti²⁺ · C. Ni²⁺ and Cr³⁺ · D. Mn³⁺ and Fe³⁺

Question

Q35. Which of the following pairs of transition metal ions is the strongest oxidizing agent?

FirstInTest · Accepted Answer

An oxidizing agent is a substance that accepts electrons and gets reduced in the process. We are looking for the pair of ions that are most readily reduced (i.e., strong oxidizing agents).Let's analyze the common oxidation states and electronic configurations:(a) Fe²⁺ ([Ar]3d⁶) and Mn²⁺ ([Ar]3d⁵): Both Fe²⁺ and Mn²⁺ are relatively stable ions. Mn²⁺ with its half-filled d⁵ configuration is particularly stable and thus not easily oxidized or reduced. Fe²⁺ can be oxidized to Fe³⁺, making it a reducing agent, not an oxidizing agent in this context. So, this pair is not strong oxidizing agents.(b) Cu²⁺ ([Ar]3d⁹) and Ti²⁺ ([Ar]3d²): Cu²⁺ can be reduced to Cu⁺ or Cu (acting as an oxidizing agent). Ti²⁺ is readily oxidized to Ti³⁺ or Ti⁴⁺ (acting as a reducing agent). This pair does not consist of two strong oxidizing agents.(c) Ni²⁺ ([Ar]3d⁸) and Cr³⁺ ([Ar]3d³): Ni²⁺ is a relatively stable ion and a mild oxidizing agent. Cr³⁺, with its stable half-filled t₂g configuration in octahedral complexes, is very stable and not easily oxidized or reduced; it is also a very mild oxidizing agent if at all. This pair is not strong oxidizing agents.(d) Mn³⁺ ([Ar]3d⁴) and Fe³⁺ ([Ar]3d⁵): Both of these ions are known to be oxidizing agents. Mn³⁺ readily accepts an electron to achieve the highly stable half-filled d⁵ configuration of Mn²⁺. Its standard reduction potential (E° for Mn³⁺/Mn²⁺ is +1.57 V) is very high, indicating it is a very strong oxidizing agent. Fe³⁺ also readily accepts an electron to achieve the relatively stable d⁶ configuration of Fe²⁺ (E° for Fe³⁺/Fe²⁺ is +0.77 V). Therefore, both Mn³⁺ and Fe³⁺ are strong oxidizing agents, with Mn³⁺ being generally stronger than Fe³⁺.Among the given options, the pair Mn³⁺ and Fe³⁺ represents the strongest oxidizing agents.

Answer

Fe²⁺ and Mn²⁺

Answer

Cu²⁺ and Ti²⁺

Answer

Ni²⁺ and Cr³⁺

Answer

Mn³⁺ and Fe³⁺

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