Periodic Table of the Elements: Praseodymium
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| Atomic Number: | 59 |
| Atomic Symbol: | Pr |
| Praseodymiumpraseodymium [Gr., =green twin], metallic chemical element; symbol Pr; at. no. 59; at. wt. 140.90765; m.p. 931°C;; b.p. 3,512°C;; sp. gr. about 6.8; valence +3 or +4. Praseodymium is a soft, malleable, ductile, silver-yellow metal. ..... Click the link for more information. | |
| Atomic Weight: | 140.90765 |
| Electron Configuration: | 2 · 8 · 18 21 · 8 · 2 |