Difference between revisions of "Praseodymium"
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| − | {{ | + | {{Element | name=Praseodymium | symbol=Pr | anumber=59 | amass=140.90765 amu | state=Solid | class=Metallic | cstructure=Hexagonal | color=Silvery; can develop a green tarnich when exposed to air. | date=1885 | discname=Baron Carl Auer von Welsbach | origname=From the Greek ''prasios'', meaning ''green'', and ''didymos'', meaning ''twin''. | uses=Used as an alloying agent with magnesium to create high-strength metals for use in aircraft engines; Cores of carbon arc lights, used in the film industry for studio lighting and projector lights; Praseodymium compounds colour glasses and enamels yellow. | obtained=Obtained from [[monazite]] and [[bastnasite]] ores. }} |
| − | [[ | + | '''Praseodymium''' is a [[metal]]lic element in the [[Lanthanum|Lanthanoid group]]. It is soft, silvery, malleable, and ductile.<ref>https://www.webelements.com/praseodymium/</ref> It is one of the [[rare earth elements]]. |
| − | + | ||
| + | ==References== | ||
| + | {{reflist}} | ||
| + | |||
| + | [[Category:Elements]] | ||
| + | [[Category:Metals]] | ||
| + | {{Periodic table}} | ||
Latest revision as of 00:28, December 8, 2018
| Praseodymium | |
|---|---|
| Properties | |
| Atomic symbol | Pr |
| Atomic number | 59 |
| Classification | Metallic |
| Atomic mass | 140.90765 amu |
| Other Information | |
| Date of discovery | 1885 |
| Name of discoverer | Baron Carl Auer von Welsbach |
| Name origin | From the Greek prasios, meaning green, and didymos, meaning twin. |
| Uses | Used as an alloying agent with magnesium to create high-strength metals for use in aircraft engines; Cores of carbon arc lights, used in the film industry for studio lighting and projector lights; Praseodymium compounds colour glasses and enamels yellow. |
| Obtained from | Obtained from monazite and bastnasite ores. |
Praseodymium is a metallic element in the Lanthanoid group. It is soft, silvery, malleable, and ductile.[1] It is one of the rare earth elements.
References
| Periodic Table of the Elements | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |||||||
| *Lanthanides | 59
Pr 140.91 |
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| **Actinides | ||||||||||||||||||||||||
