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Chemical properties:
Chemical symbol: Nb
Atomic number: 41
Atomic weight: approximately 92.91 g/mol
Race: 5B
Electron configuration: [Kr] 4d^4 5s^1

Physical properties:
Phase: Niobium is a solid metal at room temperature.
Density: Niobium has a density of about 8.57 g/cm³, making it a fairly heavy metal.
Melting point: The melting point of niobium is about 2477°C (about 4491°F).
Boiling point: The boiling point of niobium is about 4744°C (about 8571°F).
Hardness: Niobium is a fairly hard metal, reaching about 6.0-6.5 on the Mohs hardness scale.
Electrical conductivity: Niobium is a good electrical conductor.

Chemical stability:
Niobium is a fairly stable metal that does not easily react with oxygen in the air at room temperature.
It forms compounds with many non-metallic elements at high temperatures, such as nitrogen, sulfur, carbon, etc.
Purpose:
Niobium has many uses in industry, including:
Alloy preparation: niobium alloying with other metal elements (such as titanium, molybdenum, etc.) can improve the strength and corrosion resistance of the alloy, so it is used in aerospace, nuclear industry and other fields.
Superconductors: Niobium can be used to make superconductors that exhibit resistance-free conductivity at low temperatures and are used in medical imaging, magnetic resonance imaging and other fields.
Electronic devices: Niobium is also used in the manufacture of electronic devices, such as capacitors, resistors, etc.
In general, niobium is an important metallic element with good chemical stability and physical properties, and is widely used in a variety of industrial applications.