CAS Number7440-63-3
PubChem CID23991
Atomic Radius108
Atomic Volume37.3
Atomic Weight131.293
Boiling Point-108.12
Bulk Modulus
CategoryNoble gases
Crystal StructureFace Centered Cubic
Covalent Radius140
Electrical Resistivity
Electron Configuration[Kr] 4d10 5s2 5p6
Electrons per shell2, 8, 18, 18, 8
Heat of Fusion2.3
Heat of Vaporization12.64
Ionization Potential12.13
Magnetic Ordering
Magnetic Susceptibility
Mass Number54
Melting Point-111.7
Atomic Number131
Oxidation States2, 4, 6, 8
Poisson Ratio
Shear Modulus
Specific Heat Capacity0.158
Thermal Conductivity0
Van der Waals radius
Young's Modulus
Abundance in Earth's crust2×10-9%
Abundance in Universe1×10-6%
Xe Xenon 54 131.293 18 5 p 54 -111.8 -107.1 [Kr] 4d10 5s2 5p6 2 8 18 18 8 0.00589 2E-9% Colorless Cubic: Face centered 2.6 2.582 {"1":"1170.4","2":"2046.4","3":"3099.4"} 1176 0 131 0 1.24 42.9 2.3 12.64 0.158 0.00569 0 Gas, Diamagnetic, NobleGas, Nonmetal, Stable, Natural ZEE-non Heavy, colorless, odorless, noble gas. Used for filling flash lamps and other powerful lamps. Electrical excitation of xenon produces a burst of brilliant whtie light. Also used in bubble chambers and modern nuclear power reactors. Obtain from the small quantities in liquid air. Ejoct_6pQ74 Xenon
Niobium was discovered by the English chemist Charles Hatchett in 1801 and named the new element columbium.

In 1846, German chemist Henrich Rose independently discovered the element and named it niobium.

The metal was first isolated by Swedish scientist Christian Wilhelm Blomstrand in 1864 who reduced the chloride by heating it in a hydrogen atmosphere. Named after Niobe, the daughter of Tantalu 54 1898 Sir William Ramsay, Morris W. Travers England From the Greek word "xenos" meaning "stranger"

Isotopes of Niobium

Standard Atomic Weight


Stable Isotopes

124Xe 126Xe 128Xe 129Xe 130Xe 131Xe 132Xe 134Xe 136Xe

Unstable Isotopes

110Xe 111Xe 112Xe 113Xe 114Xe 115Xe 116Xe 117Xe 118Xe 119Xe 120Xe 121Xe 122Xe 123Xe 125Xe 127Xe 133Xe 135Xe 137Xe 138Xe 139Xe 140Xe 141Xe 142Xe 143Xe 144Xe 145Xe 146Xe 147Xe

Some niobium compounds are highly toxic
Brazil is the leading producer of niobium
Niobium is used in arc-welding rods for stabilized grades of stainless steel.

Niobium alloys are strong and are often used in pipeline construction.

The metal is used in superalloys for jet engines and heat resistant equipment.

Niobium is found in many medical devices such as pacemakers.