Color Of Complexes
Color in transition metal complexes mainly arises due to:
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Color of transition metal complexes primarily arises from:
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About This Question
- Subject
- chemistry
- Chapter
- coordination compounds
- Topic
- color of complexes
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
d–d transitions within split d-orbitals
- Orbital Splitting: CFT explains that d-orbitals of a metal are split into two sets (e.g., t2g and eg) by the ligand field.
- Radiation Absorption: When white light falls on the complex, an electron from a lower energy d-orbital can absorb a specific wavelength (energy) and jump to a higher energy d-orbital.
- Observed Color: The transmitted light (what we see) consists of the remaining wavelengths, which is the complementary color of the absorbed radiation.
- Requirement: This necessitates partially filled d-orbitals. d10 (zinc) and d0 (scandium III) complexes are generally colorless.
This easy difficulty chemistry question is from the chapter coordination compounds, covering the topic of color of complexes. It appeared in the 2025 exam.
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