Minimum Cation to Anion Radius Ratio for Coordination Number of Three
Автор: Manasseh Nhyiraba Eshun
Загружено: 2025-05-03
Просмотров: 295
Learn how to derive the minimum cation to anion radius ratio (r_c / r_a) for a coordination number of 3. This tutorial breaks down the geometric proof step-by-step, using an equilateral triangle formation to find the critical stability limit for ionic structures.
0:00 - Introduction to Coordination Number 3
0:30 - Geometric Setup & Equilateral Triangle
1:15 - Identifying Key Angles (30° & 60°)
2:00 - Applying Trigonometry (Cosine Rule)
3:20 - Deriving the Radius Ratio Formula
4:50 - Final Calculation & Result (0.155)
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