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"

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.