| lanthanum |
a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
출처: wordnet.princeton.edu/perl/webwn
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| lantern jaw |
a long thin lower jaw
출처: wordnet.princeton.edu/perl/webwn
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| lanthanide |
rare earth: any element of the lanthanide series (atomic numbers 57 through 71)
출처: wordnet.princeton.edu/perl/webwn
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| lanthanide |
The lanthanide series comprises the 14 rare earth elements from cerium to lutetium on the periodic table, with atomic numbers 58 through 71. The lanthanide series is named after lanthanum, and this element is often included in the series by convention. All Lanthanides are f-block elements except lutetium. A strict correlation between periodic table blocks and chemical series would include lanthanum in the series and place lutetium in the transition metals. ...
출처: en.wikipedia.org/wiki/Lanthanide
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| lanthanum |
CAS Number: 7439-91-0. A soft, silvery-white metal that rapidly tarnishes in air and burns easily. It reacts with water to give off hydrogen gas. Used in optical glass and for flints. Chemical formula = La. Molecular weight = 138.9055 g/mol. See This is a test, See This is a test,
출처: www.pca.state.mn.us/gloss/glossary.cfm
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