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Niobium (Nb) — names, discovery, and principal uses: Multiple Choice
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- 01Which niobium-containing compound is widely used in superconducting magnets for applications like MRI and particle accelerators?
- 02Which chemist proposed the name 'niobium' in the 19th century, creating the alternative to 'columbium'?
- 03What is one of the primary industrial uses of niobium today?
- 04Which country is the largest producer of niobium ore (notably from large pyrochlore deposits)?
- 05Which mineral is the principal ore source for niobium production worldwide?
- 06Niobium is often used in alloys to improve which property of steels?
- 07What is niobium’s chemical symbol on the periodic table?
- 08Who is credited with the discovery of the element now known as niobium in 1801?
- 09What was the name originally given to niobium by its discoverer (later widely used in early literature)?
- 10Besides pyrochlore, which mixed oxide mineral historically associated with niobium is commonly mentioned in its ores?