Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 23 - Problems - Page 1049: 23.97


See explanation below.

Work Step by Step

The hexaaqua complex [Ni(H2O)6]2+ , an aqua ligand is generally weak.This weaker ligand have lower splitting energy and hence absorbs lower energy light.It absorbs red color and reflects back green.But hexaammine complex is strong ligand and is able to split better and absorbs yellow light having higher energy and reflects back red light.
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