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The complex that has highest crystal field splitting energy ()

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The complex that has highest crystal field splitting energy $(Δ)$ , is

Name: Video solution 1: The complex that has highest crystal field splitting energy (Δ), is
Uploaded: 2022-12-28T06:14:47.000Z
Duration: 16 min
Description: Video solution 1: The complex that has highest crystal field splitting energy (Δ), is

[Co (NH_{3})_{5} Cl] Cl_{2}

[Co (NH_{3})_{5} (H_{2} O)] Cl_{3}

K_{3} [Co (CN)_{6}]

K_{2} [CoCl_{4}]

Views: 5,771 students

Updated on: Jan 18, 2023

Book:

Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Exam:

JEE Mains 2019

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The complex that has highest crystal field splitting energy

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Text solutionVerified

All of the complex given are the octahedral complexes of Co (III) except

K_{2} [CoCl_{4}]

, which is a tetrahedral complex of Co (II) (

Sp^{3}

-hybridised). We know,

Δ_{t} < Δ_{O} [∵ Δ_{t} = \frac{4}{9} Δ_{O}]

So, the octahedral complexes

(a, b, c)

have higher

Δ_{0}

values than that of tetrahedral,

K_{2} [CoCl_{4}]

Now, for the complexes,

a, b

and

c

, the magnitude of

Δ_{O} \propto

ligand strength, which is based on their positions in the spectrochemical series.

Cl^{-} < H_{2} O < NH_{3} < CN^{-}

Hence,

K_{3} [Co (CN)_{6}]

will have the highest

Δ

value.

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Question Text	The complex that has highest crystal field splitting energy $(Δ)$ , is
Updated On	Jan 18, 2023
Topic	Coordination Compounds
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1 Video solution: 4
Upvotes	437
Avg. Video Duration	8 min

The complex that has highest crystal field splitting energy $(Δ)$ , is

Text solutionVerified

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The complex that has highest crystal field splitting energy (Δ), is

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Questions from JEE Mains 2019 - PYQs

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The complex that has highest crystal field splitting energy $(Δ)$ , is