NCERT Solutions for Class 12 Chemistry Chapter 9 Coordination Compounds
NCERT Solutions for Class 12 Chemistry Chapter 9 Coordination Compounds
Chapter: Chapter 9 – Coordination Compounds
Question 9.1:
Explain the bonding in coordination compounds in terms of Werner’s postulates.
Answer
Werner’s postulates explain the bonding in coordination compounds as follows:
(i) A metal exhibits two types of valencies namely, primary and secondary valencies.
Primary valencies are satisfied by negative ions while secondary valencies are satisfied by both negative and neutral ions.
(In modern terminology, the primary valency corresponds to the oxidation number of the metal ion, whereas the secondary valency refers to the coordination number of the metal ion.
(ii) A metal ion has a definite number of secondary valencies around the central atom.
Also, these valencies project in a specific direction in the space assigned to the definite geometry of the coordination compound.
(iii) Primary valencies are usually ionizable, while secondary valencies are non-ionizable.
Explain the bonding in coordination compounds in terms of Werner’s postulates.
Answer
Werner’s postulates explain the bonding in coordination compounds as follows:
(i) A metal exhibits two types of valencies namely, primary and secondary valencies.
Primary valencies are satisfied by negative ions while secondary valencies are satisfied by both negative and neutral ions.
(In modern terminology, the primary valency corresponds to the oxidation number of the metal ion, whereas the secondary valency refers to the coordination number of the metal ion.
(ii) A metal ion has a definite number of secondary valencies around the central atom.
Also, these valencies project in a specific direction in the space assigned to the definite geometry of the coordination compound.
(iii) Primary valencies are usually ionizable, while secondary valencies are non-ionizable.
NCERT Solutions For Class 12 Chemistry PDF Download
- Chapter 1 The Solid State NCERT Solutions Class 12 Chemistry
- Chapter 2 Solutions NCERT Solutions Class 12 Chem
- Ch 3 Electro chemistry NCERT Solutions Class 12 Chemistry
- Chapter 4 Chemical Kinetics NCERT Solutions Class 12 Chem
- Chapter 5 Surface Chemistry Class 12 Chemistry Download
- Ch 6 General Principles and Processes of Isolation of Elements Chemistry Download
- Chapter 7 The p Block Elements NCERT Solutions Class 12 Chemistry
- Chapter 8 The d and f Block Elements NCERT Solutions Class 12th
- Ch 9 Coordination Compounds NCERT Solutions Class 12
- Chapter 10 Haloalkanes and Haloarenes NCERT Chemistry
- Chapter 11 Alcohols Phenols and Ethers NCERT Chemistry Download
- Ch 12 Aldehydes Ketones and Carboxylic Acids NCERT Solutions Class 12
- Chapter 13 Amines NCERT Solutions Class 12 Chemistry
- Chapter 14 Biomolecules NCERT Solutions Class 12 Chemistry
- Ch 15 Polymers NCERT Solutions Chemistry Download
- Chapter 16 Chemistry in Everyday Life Chemistry Download
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