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Coordination Compounds Class 12 Notes Chemistry Chapter 5

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FAQs on Coordination Compounds Class 12 Notes Chemistry Chapter 5

1. What are coordination compounds?
Ans. Coordination compounds are complex molecules or ions that consist of a central metal atom or ion bonded to one or more ligands. Ligands are molecules or ions that donate electron pairs to the metal atom, forming a coordinate bond.
2. How are coordination compounds formed?
Ans. Coordination compounds are formed through a process called coordination bonding. In this process, the metal atom or ion accepts electron pairs from the ligands, which have lone pairs of electrons. The coordination number, which represents the number of ligands attached to the metal atom, determines the geometry and stability of the coordination compound.
3. What is the importance of coordination compounds?
Ans. Coordination compounds have various important applications in everyday life and industries. They are used as catalysts in chemical reactions, in medicine for drug delivery systems, in agriculture as fertilizers, and in analytical chemistry for complexometric titrations. Additionally, coordination compounds are used in the production of dyes, pigments, and materials with magnetic properties.
4. What is a chelate ligand in coordination compounds?
Ans. A chelate ligand is a type of ligand that forms multiple coordinate bonds with the metal atom or ion in a coordination compound. It has two or more atoms with lone pairs of electrons, allowing it to bond to the metal atom from multiple directions. Chelate ligands enhance the stability and reactivity of coordination compounds.
5. How do coordination compounds exhibit different colors?
Ans. The colors exhibited by coordination compounds are due to a phenomenon called ligand field splitting. When ligands bind to the metal atom, the d-orbitals of the metal atom split into different energy levels. The energy difference between these levels corresponds to certain wavelengths of visible light, resulting in the absorption of specific colors. The color observed is the complementary color of the absorbed light. This property is utilized in various applications, including the coloration of gems and pigments.
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