Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. metal
8. [metal by composition or origin]
9. nonferrous metal

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by form
6. materials by chemical form
7. elements

Anotations

Scope note:

A rare silvery-white hard ductile metallic element of the transition series, atomic number 45; Symbol Rh. Rhodium is resistant to acids, and may occur naturally in pure form, but is normally obtained from nickel ores. It is used especially as a catalyst and in platinum alloys.