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Crystal field spliiting energy

Complete removal of both the axial ligands (along the z-axis)

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Medium

Solving time: 3 mins

Complete removal of both the axial ligands (along the $z$ -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

Views: 5,909 students

Updated on: Sep 25, 2023

Book:

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

Exam:

JEE Mains 2019

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Sebastian Discussed

Complete removal of both the axial ligands (along the

z

-axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

14 mins ago

Discuss this question LIVE

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Text solutionVerified

Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to the following splitting pattern. Solution Image

The single electron in the

d_{x^{2} - y^{2}}

orbital is being repelled by four ligands, while the electron in the

d_{z^{2}}

orbital is only being repelled by two ligands. Thus, the energy of the increases relative to that of

d_{x^{2} - y^{2}}

. A more stable arrangement arises when both the

e_{g}

electrons pair up and occupy the lower energy

d_{z^{2}}

orbital. This leaves the

d_{x^{2} - y^{2}}

orbital empty. Thus, four ligands can now approach along

+ x, - x, + y

and

- y

directions without any difficulty as

d_{x^{2} - y^{2}}

orbital is empty. However, ligands apprơaching along

+ z

and

- z

directions meet very strong repulsive forces from filled

d_{z^{2}}

orbitals. Thus, only four ligands succeed in bonding to the metal. A square planar complex is formed, the attempt to form an octahedral complex being unsuccessful.

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Question Text	Complete removal of both the axial ligands (along the $z$ -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).
Updated On	Sep 25, 2023
Topic	Coordination Compounds
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1 Video solution: 5
Upvotes	549
Avg. Video Duration	13 min

Complete removal of both the axial ligands (along the $z$ -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

Text solutionVerified

Filo tutor solutions (5)

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Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

Text solutionVerified

Filo tutor solutions (5)

Questions from JEE Mains 2019 - PYQs

Practice questions from Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

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Complete removal of both the axial ligands (along the $z$ -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).