Niobium

Transition metal

Symbol: Nb

Atomic Number: 41

Standard State: Solid

Atomic Mass: 92.90637

Electron Configuration: [Kr]5s1 4d4

Electronegativity: 1.6

Atomic Radius: 207

Ionization Energy: 6.759

Melting Point: 2750

Boiling Point: 5017

Density: 8.57

Year Discovered: 1801