Webelements

I recently forgot if N2 was heavier than O2 and the #1 Google result was this site:

<a href="http://www.webelements.com/">http://www.webelements.com/</a>

An example:

Did you know that

"Palladium is a steel-white metal, does not tarnish in air, and is the least dense and lowest melting of the platinum group metals. When annealed, it is soft and ductile. Cold working increases its strength and hardness. It is used in some watch springs.

At room temperatures the metal has the unusual property of absorbing up to 900 times its own volume of hydrogen. Hydrogen readily diffuses through heated palladium and this provides a means of purifying the gas."

<a href="http://www.webelements.com/webelements/elements/text/Pd/key.html">http://www.webelements.com/webelements/elements/text/Pd/key.html</a> Received on Fri Apr 25 20:54:00 2003