Isomorphous

Definition

Isomorphous refers to crystals having the same atomic arrangement or structure but composed of different chemical elements. These substances can form solid solutions due to their structural similarity.

5 Must Know Facts For Your Next Test

1. Isomorphous substances have identical lattice structures despite different chemical compositions.
2. They often form continuous solid solutions, where the two components are completely miscible in each other in the solid state.
3. Examples include the complete miscibility of copper and nickel in all proportions, forming isomorphous alloys.
4. The concept is crucial in understanding phase diagrams and predicting material properties based on composition.
5. Isomorphous substitution can significantly alter physical properties like melting point, hardness, and electrical conductivity.

Review Questions

Related terms

Solid Solution: A homogeneous crystalline phase that contains two or more chemical species.

Lattice Structure: The regular arrangement of atoms, ions, or molecules in a crystalline solid.

Phase Diagram:

A graphical representation showing the phases present at different temperatures, pressures, and compositions.