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NCERT Exemplar Class 12 Chemistry Chapter 9 Solutions: Coordination Compounds

NCERT Exemplar Class 12 Chemistry Solutions Chapter 9 Coordination Compounds will help you understand the concepts of coordination sphere & polyhedron, ligand, atom, and oxidation number. It will also help you understand the idea of the nomenclature of coordination compounds. This chapter of NCERT Exemplar Class 12 Chemistry covers essential theories, like Werner’s theory of coordination compounds. The topics of isomerism and stability of coordination compounds are discussed.

Towards the end, you will also get familiar with bonding in coordination compounds and metal carbonyls. The application and importance of these compounds are wide-ranged. To cover all these wide-ranged topics, the chapter is divided into well-thought exercises consisting of a total of 62 questions. These questions are spread over six sub exercise testing each level of difficulty. The different sections are Multiple-choice questions (MCQ) with single correct and more than one right, Short answer(SA), Matching type, Assertion & Reason type, and Long answer(LA).

Getting knowledgeable with the exemplar questions will prepare you to confront the Class 12 Chemistry exams and assist you with scoring excellent marks in graduate entrance tests like JEE and NEET. NCERT Class 12 Chemistry Exemplar for Chapter 9 Solution by InstaSolv provides you with a collection of questions that will help you understand all the topics and their vast number of applications.

Important Topics NCERT Exemplar Class 12 Chemistry Solutions Chapter 9 – Coordination Compounds

Coordination Compounds: A coordination compound is an atomic compound that outcomes from the combination of at least two simple sub-atomic mixes and holds its character in the solid just as in the liquid state.

Coordination Entity: It is the focal metal particle or ion which is attached to a certain number of particles or atoms which are fixed. For instance, in [Co(NH3)6]Cl3, a coordination substance, six ammonia salts atoms are encompassed by three chloride particles.

Central atom: It is the central cation that is surrounded and coordinated bonded to one or more neutral molecules or negatively charged ions in a definite geometrical arrangement. For example, in the complex [Co(NH3)6]Cl3, Co3+ represents the central metal ion, which is positively charged and is coordinately bonded to six neutral NH3 molecules within the coordination sphere.

Ligands: The particles or atoms bound to the focal particle in the coordination substance are called ligands. These might be pure particles; for example, Cl–, bigger atoms such as H2NCH2CH2NH2.

Coordination Number: The quantity of atoms of the ligands that are bound to the focal metal particle by coordinate bonds is known as the coordination number of the metal molecule or particle. It is likewise equivalent to the secondary valency.

WERNER’S THEORY Werner clarified the idea of holding in complexes, and he presumed that in buildings, the metal shows two distinct kinds of valency. 

Primary Valency: The primary valency is equivalent to the oxidation state of the central metal particle. These are non-directional. 

Secondary Valency: The quantity of ligand particles composed of the central metal molecule is called secondary valency. These are directional; thus, a complex-ion has a specific shape.

EFFECTIVE ATOMIC NUMBER (EAN): It is characterized as the resultant number of electrons with the metal particle after obtaining electrons from the donor molecules of the ligands. The effective atomic number (EAN), for the most part, matches with the nuclear number of next latent gas at times.

Exercise Discussion of NCERT Exemplar Class 12 Chemistry Solutions Chapter 9 – Coordination Compounds

  • The first section of NCERT Exemplar Class 12 Chemistry Solutions Chapter 9 has 23 questions, which are MCQs and some of which are ‘single correct answers’ while others have ‘more than one correct solution.’ These are based on finding various compounds and their naming and formulas correctly. 
  • The second section has 12 questions, from 24-35 are short answer type questions that are focussed on conductivity, magnetic moment, electronic configurations, and isomers.
  • The next section is matching type and assertion & reason type questions, which consists of 10 items that are based on matching colour and components of various compounds.
  • The final section has 5 questions, which are long answer type questions that are based on crystal bond theory and valence bond theory.

Why Use NCERT Exemplar Class 12 Chemistry Solutions Chapter 9 – Coordination Compounds by Instasolv?

NCERT Exemplar Class 12 Chemistry Solutions Chapter 9 – Coordination Compounds by Instasolv experts sets all the fundamental subjects with a topic-wise explanation that intends to help students with understanding the section better. Encountering the solutions given on this page will help you in recognizing how to approach and deal with the issues of any sort and any degree of difficulty. 

InstaSolv’s NCERT Exemplar answers for Chapter 9 are accessible free of cost. These are the best examination materials you can use for your last minute studies and revision.