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Isomerism : Geometrical, Optical (Part - 11) - Coordination Compounds, Chemistry, Class 12 Video Lecture

FAQs on Isomerism : Geometrical, Optical (Part - 11) - Coordination Compounds, Chemistry, Class 12 Video Lecture

1. What is isomerism in coordination compounds?

Ans. Isomerism in coordination compounds refers to the phenomenon where different compounds have the same molecular formula but different arrangements of atoms. In other words, isomers have the same number and types of atoms but differ in their connectivity or spatial arrangement.

2. What is geometrical isomerism in coordination compounds?

Ans. Geometrical isomerism in coordination compounds arises due to the presence of a rigid ligand or a nonbonding pair of electrons. In such cases, the ligands cannot freely rotate around the metal ion, leading to different possible spatial arrangements. These isomers can be cis-isomers (ligands on the same side) or trans-isomers (ligands on opposite sides).

3. What is optical isomerism in coordination compounds?

Ans. Optical isomerism in coordination compounds occurs when there is a chiral center in the complex. A chiral center is a carbon atom or metal ion that is attached to four different ligands. These isomers are non-superimposable mirror images of each other and rotate the plane of polarized light in opposite directions.

4. How can we identify geometrical isomers in coordination compounds?

Ans. Geometrical isomers in coordination compounds can be identified by examining the connectivity and arrangement of ligands around the central metal ion. If the ligands are arranged in a cis-fashion (on the same side), it is a cis-isomer. If the ligands are arranged in a trans-fashion (on opposite sides), it is a trans-isomer.

5. How does isomerism affect the properties of coordination compounds?

Ans. Isomerism in coordination compounds can lead to differences in physical and chemical properties. Geometrical isomers may have different boiling points, melting points, and solubilities due to their different spatial arrangements. Optical isomers, on the other hand, exhibit different optical activity and can interact differently with other chiral molecules, enzymes, or receptors.

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Oct 10, 2025 Last updated

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