Explain the violet colour of the complex [Ti(H2O)6]3+ on the basis of crystal field theory | 12
🔮 Why is [Ti(H2O)6]3 Violet in Colour? | Crystal Field Theory Explained | Class 12 Chemistry
Class: 12
Subject: CHEMISTRY
Chapter: COORDINATION COMPOUNDS
Board: CBSE
This question is very important for CBSE Board Exams, frequently asked in:
✅ Board theory questions
✅ Case-study questions
✅ Assertion–Reason questions
✅ Competitive exams (JEE / NEET foundation)
🔬 What You’ll Learn in This Video:
✔ Electronic configuration of Ti³⁺ (3d¹ system)
✔ Octahedral crystal field splitting (t₂g & e_g)
✔ Absorption of visible light energy
✔ d–d electronic transition
✔ Complementary colour concept
✔ Why violet colour is observed
🎯 Key Concept Explained Simply:
When white light falls on the complex [Ti(H₂O)₆]³⁺,
the single d-electron absorbs energy and jumps from:
👉 t₂g → e_g orbital
The absorbed light corresponds to yellow–green region,
so the complementary colour violet is observed.
✨ This phenomenon is explained completely using Crystal Field Theory (CFT).
📚 Chapter Details:
📘 Class: 12
📘 Subject: Chemistry
📘 Chapter: Coordination Compounds
📘 Board: CBSE
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