P3+Lanthanides

Lanthanides: The Lanthanides are highlighted in yellow.
 * Lanthanides are found in row (period) six and between groups three and four of the periodic table.
 * Elements in the Lanthanide groups are
 * Cerium (Ce)
 * Praseodymium (Pr)
 * Neodymium (Nd)
 * Promethium (Pm)
 * Samarium (Sm)
 * Europium (Eu)
 * Gadolinium (Gd)
 * Terbium (Tb)
 * Dysprosium (Dy)
 * Holmium (Ho)
 * Erbium (Er)
 * Thulium (Tm)
 * Ytterbium (Yb)
 * Lutertium (Lu).

Most Lanthanides are solids except that Promethium is radioactive and synthetic.

Physical properties of Lanthanides are:
 * 1) They have a bright silvery appearance.
 * 2) Their melting point is about 819 degrees Celsius about (1500 degrees Fahrenheit).
 * 3) Lanthanides tend to be pale colors.

Chemical properties of Lanthanides are:
 * 1) They react slowly with with cold water
 * 2) Corrode easily when contaminated with other metals.
 * 3) Burn in the air to form oxides.

Cool Facts:
 * 1) Chemists thought the elements were in the Earth's crust in very small amounts.
 * 2) They were once called rare earth elements
 * 3) Most important source of Lanthanides is monazite. It is a heavy dark sand found in Brazil.

Uses
 * 1) Used in street lights, searchlights, and high-intensity lighting in sports stadiums.
 * 2) Used in gas lighters.

Lanthanides react to neon lights to make them fluorescent.

“Lanthanides in the Periodic Table.” n.d. Web. Luminescent Lanthanides. 20 October. 2009. .  "Lanthanides." //Scienceclarified.com//. IOMA. Web. 20 Oct. 2009.

Helmenstine, Anne M. "Lanthanides." Www.About.com, 18 May 2007. Web. 26 Oct. 2009. .

//Lanthanids.jpg//. Digital image. //Faculty Research Programs//. University of Southern Maine, 7 Apr. 2005. Web. 26 Oct. 2009. .