Columbium
Description
A former name for the rare element whose name was changed to Niobium in 1949. The name 'columbium' is still occasionally used by metallurgists.
| Composition | Cb |
|---|
A former name for the rare element whose name was changed to Niobium in 1949. The name 'columbium' is still occasionally used by metallurgists.
| Composition | Cb |
|---|
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