Atomic No.	Name	Symbol
57	Lanthanum	La
58	Cerium	Ce
59	Praseodymium	Pr
60	Neodymium	Nd
61	Promethium	Pm
62	Samarium	Sm
63	Europium	Eu
64	Gadolinium	Gd
65	Terbium	Tb
66	Dysprosium	Dy
67	Holmium	Ho
68	Erbium	Er
69	Thulium	Tm
70	Ytterbium	Yb
71	Lutetium	Lu

The lanthanide (or lanthanoid) series comprises the 15 elements with atomic numbers 57 through 71, from lanthanum to lutetium. All lanthanides except lutetium are f-block elements, corresponding to the filling of the 4f electron shell. The lanthanide series is named after lanthanum. There are also alternative arrangements which do not include either lanthanum or lutetium.

Terminology

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The lanthanides, together with scandium and yttrium, are also sometimes referred to by the trivial name "rare earths", although this name is deprecated by IUPAC, as they are neither rare in abundance (even the least abundant, lutetium, is more abundant in the Earth's crust than gold), nor are they "earths" (an obsolete term for oxides).

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RT @salsb cool; where is this? CR: At Coconut Joe's on the Isle of Palms, SC. Kept busy seeing how many Lanthanides & Actinides I could name
CassieRodenberg (Cassie Rodenberg) Sun, 03 Jan 2010 15:00:31 -0000
RT @salsb cool; where is this? CR: At Coconut Joe's on the Isle of Palms, SC. Kept busy seeing how many Lanthanides & Actinides I could name
Lanthanides/Actinides: Chemistry, Volume Volume 18 (Handbook on the Physics and Chemistry of Rare Earths): Lant.. http://bit.ly/7WpnmD
sundrygoods (Sundry Goods) Fri, 01 Jan 2010 04:41:57 -0000
Lanthanides/Actinides: Chemistry, Volume Volume 18 (Handbook on the Physics and Chemistry of Rare Earths): Lant.. http://bit.ly/7WpnmD
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LutetiumOxy (Steph Nile) Wed, 30 Dec 2009 18:56:09 -0000
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