The Elements - Periodic Table
planet's interior the pressure is so great that solid molecular hydrogen is converted to solid metallic hydrogen. In 1973, a gro ...
Normal hydrogen at room temperature contains 25% of the para form and 75% of the ortho form. The ortho form cannot be prepared i ...
Helium For blimps Atomic Number: 2 Atomic Symbol: He Atomic Weight: 4.00260 Electron Configuration: 1s^2 History (Gr. helios, th ...
Properties Helium has the lowest melting point of any element and is widely used in cryogenic research because its boiling point ...
Liquid helium's use in magnetic resonance imaging (MRI) continues to increase as the medical profession accepts and develops new ...
Lithium For pacemaker batteries Atomic Number: 3 Atomic Symbol: Li Atomic Weight: 6.941 Electron Configuration:[He]2s^1 History ...
batteries. Cost The metal is priced at about $300/lb. Sources: CRC Handbook of Chemistry and Physics and the American Chemical S ...
Beryllium For watch springs Atomic Number: 4 Atomic Symbol: Be Atomic Weight: 9.01218 Electron Configuration:[He]2s^2 History (G ...
Uses Beryllium is used as an alloying agent in producing beryllium copper, which is extensively used for springs, electrical con ...
Boron For tennis rackets Atomic Number: 5 Atomic Symbol: B Atomic Weight: 10.81 Electron Configuration:[He]2s^2 2p^1 History (Ar ...
Uses Amorphous boron is used in pyrotechnic flares to provide a distinctive green color, and in rockets as an igniter. By far th ...
Carbon For pencils Atomic Number: 6 Atomic Symbol: C Atomic Weight: 12.011 Electron Configuration:[He]2s^2 2p^2 History (Latin: ...
Compounds In combination, carbon is found as carbon dioxide in the atmosphere of the earth and dissolved in all natural waters. ...
Nitrogen Nitrogen compounds for rocket fuels. Atomic Number: 7 Atomic Symbol: N Atomic Weight: 14.00674 Electron Configuration:[ ...
The Element The French chemist Antoine Laurent Lavoisier named nitrogen azote, meaning without life. However, nitrogen compounds ...
Ammonia Ammonia (NH 3 ) is the most important commercial compound of nitrogen. It is produced by the Haber Process. Natural gas ...
Oxygen For combustion Atomic Number: 8 Atomic Symbol: O Atomic Weight: 15.9994 Electron Configuration:[He]2s^2 2p^4 History (Gr. ...
Properties The gas is colorless, odorless, and tasteless. The liquid and solid forms are a pale blue color and are strongly para ...
Costs The gas costs 5 cents / ft 3 in small quantities, and about $15/ton in large quantities. Sources: CRC Handbook of Chemistr ...
Fluorine For toothpaste Atomic Number: 9 Atomic Symbol: F Atomic Weight: 18.998403 Electron Configuration:[He]2s^2 2p^5 History ...
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