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Introduction to Coordination Compounds
Coordination compounds (also called complex compounds) are chemical substances where a central metal atom or ion is bonded to a group of surrounding molecules or ions called ligands.
These compounds are important in both inorganic chemistry and biological systems. For example:
- Chlorophyll (in plants) contains magnesium.
- Haemoglobin (in blood) contains iron.
- Vitamin B12 contains cobalt.
Key Concepts:
- Central Atom/Ion: Usually a metal like Fe, Co, Ni.
- Ligands: Ions or molecules that donate electrons to the metal (e.g., NH₃, Cl⁻, CN⁻).
- Coordination Number: Number of ligand atoms directly bonded to the central atom.
- Coordination Sphere: The central atom and its attached ligands, shown in square brackets.
- Isomerism: Coordination compounds can show different types of isomerism like geometrical and optical.
Why It Matters:
Coordination compounds are used in:
- Medicines (e.g., anti-cancer drug cisplatin).
- Industrial catalysts.
- Water treatment (e.g., EDTA).
- Photography and dyeing.
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Introduction -
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Coordination Compounds
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Werner Theory -
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MCQs - Coordination Compounds
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Assertion and Reason - Coordination CompoundsEach question includes: Assertion (A) Reason (R) Answer options: a) Both A and R are true, and R is the correct explanation of A b) Both A and R are true, but R is not the correct explanation of A c) A is true, but R is false d) A is false, but R is true
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Short Answer Questions - Coordination Compounds
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Biomolecules
Biomolecules are the chemical compounds that make up living organisms. They help in structure, function, and regulation of life processes. The main types are:
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Biomolecules MCQs
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Biomolecules: Assertion and Reason
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Solutions
Solutions are homogeneous mixtures of two or more substances. The substance present in a larger amount is called the solvent, and the one present in a smaller amount is the solute. This chapter explains different types of solutions, how to express their concentration, and the factors that affect solubility. It also covers important concepts like vapor pressure, Raoult’s law, colligative properties, and their applications in real life.
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Solutions-MCQs
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Solutions-Assertion and reason
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Electrochemistry
Electrochemistry deals with the study of chemical reactions that involve the movement of electrons. It explains how electricity can cause chemical changes and how chemical energy can be converted into electrical energy. The chapter covers important concepts like electrochemical cells, redox reactions, the Nernst equation, conductivity, and batteries. It also explains corrosion and methods to prevent it. Overall, electrochemistry helps us understand many real-life applications such as electroplating, fuel cells, and the working of batteries.
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Electrochemistry-MCQs
