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Lanthanides and Actinides
Transcript of Lanthanides and Actinides
Lanthanides(Rare Earth Metals)
These are the elements located in the 5d block of the periodic table, usually right below the body of the periodic table, from lanthanum to lutetium.
The actinides are the elements in the bottom row of the periodic table, from actinium to lawrencium.
The lanthanide series includes elements 58 to 71, which fill their 4f sublevel progressively. The actinides are elements 90 to 103 and fill their 5f sublevel progressively.
Actinide series are typical metals and have properties of both the d block and the f block elements, but they are also radioactive. Lanthanides have different chemistry from transition metals because their 4f orbitals are shielded from the atom's environment.
The lanthanides (or rare-earth elements) and actinides are two families that are related because they both result from electrons being added into an f sub-level. Both families have 14 members, the lanthanides consisting of the elements with atomic numbers 58 through 71, and the actinides including the elements with atomic numbers 90 through 103. However, it is sometimes convenient to consider lanthanum (atomic number 57) as an
2 common uses are that they can be a therapy to cancer, and uranium and plutonium can be used to make atomic bombs
These elements are commonly used in lasers and the making of sunglass lenses. Their compounds are used as catalysts in the production of petroleum and synthetic products.
Lanthanides and Actinides: http://chemistry.about.com/b/2010/12/16/transition-metals-rare-earths-lanthanides-and-actinides.htm.
Group Number: http://www.chemicalelements.com/groups/rareearth.html
Common uses Lathanides:http://periodicfun.wikispaces.com/Lanthanides+-+p.9
Common Uses Actinides:http://periodicfun.wikispaces.com/Actinides+-+p.9