The Elements - Periodic Table

Xenon For sun lamps. Atomic Number: 54 Atomic Symbol: Xe Atomic Weight: 131.30 Electron Configuration:[Kr]5s^2 4d^10 5p^6 Histor ...

characteristics. Sources: CRC Handbook of Chemistry and Physics and the American Chemical Society. Last Updated: 12/19/97, CST I ...

Barium For spark plugs. Atomic Number: 56 Atomic Symbol: Ba Atomic Weight: 137.34 Electron Configuration:[Xe]6s^2 History (Gr. b ...

Isotope Sources: CRC Handbook of Chemistry and Physics and the American Chemical Society. Last Updated: 12/19/97, CST Informatio ...

Lanthanum For camera lenses. Atomic Number: 57 Atomic Symbol: La Atomic Weight: 138.9055 Electron Configuration:[Xe]6s^2 5d^1 Hi ...

Isotopes Natural lanthanum is a mixture of two stable isotopes, 138La and 139La. Twenty three other radioactive isotopes are rec ...

Hafnium For nuclear submarines Atomic Number: 72 Atomic Symbol: Hf Atomic Weight: 178.49 Electron Configuration:[Xe]6s^2 4f^14 5 ...

two of the most difficult to separate. Although their chemistry is almost identical, the density of zirconium is about half of h ...

Tantalum For weights. Atomic Number: 73 Atomic Symbol: Ta Atomic Weight: 180.9479 Electron Configuration:[Xe]6s^2 4f^14 5d^3 His ...

of alloys with desirable properties such as high melting point, high strength, good ductility, etc. Tantalum has a good "getteri ...

Rhenium For jewelry plating. Atomic Number: 75 Atomic Symbol: Re Atomic Weight: 186.207 Electron Configuration:[Xe]6s^2 4f^14 5d ...

carbon. The usual commercial form of the element is powder, but it can be consolidated by pressing and resistance-sintering in a ...

Platinum For dental crowns. Atomic Number: 78 Atomic Symbol: Pt Atomic Weight: 195.09 Electron Configuration:[Xe]6s^1 4f^14 5d^9 ...

Uses The metal is extensively used in jewelry, wire, and vessels for laboratory use, and in many valuable instruments including ...

Iridium For helicopter spark plugs. Atomic Number: 77 Atomic Symbol: Ir Atomic Weight: 192.22 Electron Configuration:[Xe]6s^2 4f ...

Uses Although its principal use is as a hardening agent for platinum, iridium is also used to make crucibles and devices requiri ...

Osmium For fountain pen points. Atomic Number: 76 Atomic Symbol: Os Atomic Weight: 190.2 Electron Configuration:[Xe]6s^2 4f^14 5 ...

Handling Concentrations in air as low as 10 7 g/m 3 can cause lung congestion, skin damage, or eye damage. Exposure to osmium te ...

Gold For gold bars. Atomic Number: 79 Atomic Symbol: Au Atomic Weight: 196.9665 Electron Configuration:[Xe]6s^1 4f^14 5d^10 Hist ...

Uses It is used in coinage and is a standard for monetary systems in many countries. It is also extensively used for jewelry, de ...