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Chapter 23: Q103P (page 1022)

Rank the following in order of decreasing(鈭�)and energy of light absorbed:[Cren3]3+,[CrCN6]3-,[CrCl6]3-

Short Answer

Expert verified

The final answer in decreasing order is[Cr(CN)6]3->[Cr(en)3]3+>[CrCl6]3-

Step by step solution

01

Given Information 

Given compounds are

[Cr(en)3]3+[Cr(CN)6]3-[CrCl6]3-

02

Concept Introduction

The stronger field the ligand is, the bigger the energy of light absorbed. Spectrochemical series (from weak-field to strong-field ligands):

I-<Cl-<F-<OH-<H2O<SCN-<NH3<en<NO2-<CN-<CO

03

Solution

We can now quickly formulate the answer to this problem using the spectrochemical series and the information above:

[Cr(CN)6]3->[Cr(en)3]3+>[CrCl6]3-

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Most popular questions from this chapter

Question: Some octahedral complexes have dissented shapes. In some, two metal-ligand bonds that areapart are shorter than the other four. In, for example, twobonds arelong, and the other four arelong.

(a) Calculate the longest distance between twoatoms in this complex.

(b) Calculate the shortest distance between twoatoms.

What are the coordination numbers of cobalt (III), platinum (II), and platinum (VV) in complexes?

Which of these ions cannot form both high-spin and low-spin octahedral complexes:

(a)Ti3+; (b)Co2+;(c)Fe2+; (d)Cu2+?

What is the distinction between a weak-field ligand and a strong-field ligand? Give an example of each.

Rank the following in order of increasing鈭�and energy of light absorbed:[Cr(NH3)6]3+,[Cr(H2O)6]3+,[Cr(NO2)6]3+
See all solutions

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