Chapter 23: Q99P (page 1022)

Draw orbital-energy splitting diagrams and use the spectrochemical series to show the orbital occupancy for each of the following (assuming thatis a weak-field ligand):
$a) {[Cr {(CN)}_{6}]}^{3 -} b) {[Rh {(CO)}_{6}]}^{3 +} c) {[Co {(OH)}_{6}]}^{4 -}$

Short Answer

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3 d electrons
6 d electrons
7 d electrons

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Crystal field splitting energy and spectrochemical series

The crystal field splitting energy $(Δ)$ represents the difference in energy between the two higher energy orbitals and the three lower energy orbitals; there are five orbitals which are splitted in two higher energy orbitals and three lower energy orbitals because of the electrostatic attractions between metal cation and ligands' negative charge.

$I^{-} < {Cl}^{-} < F^{-} < {OH}^{-} < H_{2} O < {SCN}^{-} < {NH}_{3} < {en}^{-} < {NO}_{2}^{-} < {CN}^{-} < CO$

Spectrochemical series (from weak-field to strong-field ligands):

- the weaker the field is, the lower the splitting energy is $(Δ)$

- the stronger the field is, the higher the splitting energy is $(Δ)$

Orbital-energy splitting diagram

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Draw orbital-energy splitting diagrams and use the spectrochemical series to show the orbital occupancy for each of the following (assuming thatis a weak-field ligand):
$a) {[Cr {(CN)}_{6}]}^{3 -} b) {[Rh {(CO)}_{6}]}^{3 +} c) {[Co {(OH)}_{6}]}^{4 -}$

Short Answer

Step by step solution

Crystal field splitting energy and spectrochemical series

Orbital-energy splitting diagram

Orbital-energy splitting diagram

Orbital-energy splitting diagram

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Draw orbital-energy splitting diagrams and use the spectrochemical series to show the orbital occupancy for each of the following (assuming thatis a weak-field ligand):a)[Cr(CN)6]3-b)[Rh(CO)6]3+c)[Co(OH)6]4-

Short Answer

Step by step solution

Crystal field splitting energy and spectrochemical series

Orbital-energy splitting diagram

Orbital-energy splitting diagram

Orbital-energy splitting diagram

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Kinetics

Chemical Analysis

Nuclear Chemistry

Chemical Reactions

Organic Chemistry

Physical Chemistry

Study anywhere. Anytime. Across all devices.

Draw orbital-energy splitting diagrams and use the spectrochemical series to show the orbital occupancy for each of the following (assuming thatis a weak-field ligand):
$a) {[Cr {(CN)}_{6}]}^{3 -} b) {[Rh {(CO)}_{6}]}^{3 +} c) {[Co {(OH)}_{6}]}^{4 -}$