| Rare Earth Metal | ||||
|
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Definition: A group of 17 chemically similar metals that includes the elements scandium and yttrium (atomic numbers 21 and 39, respectively) and the lanthanide elements (atomic numbers 57 through 71).
Explore Metals Must Reads
About.com Special Features Start your new business on the right foot with these helpful tips. More > Easy steps to take control of your credit card debt. More > ©2009 About.com, a part of The New York Times Company. All rights reserved. | ||||
