Tecken | Nd |
Atomnummer | 60 |
Grupp | - |
Period | 6 |
Block | f |
Ämnesklass | Lantanoid |
Utseende | Silvery white |
Färg | Silver |
Antal protoner | 60 p+ |
Antal neutroner | 84 n0 |
Antal elektroner | 60 e- |
Fas vid STP | Fast |
Densitet | 7.01 g/cm3 |
Relativ atommassa | 144.242 u |
Smältpunkt | 1297 K 1023.85 °C 1874.93 °F |
Kokpunkt | 3347 K 3073.85 °C 5564.93 °F |
Ångbildningsvärme | 283.68 kJ/mol |
Elektronegativitet (Paulingskalan) | 1.14 |
Elektronaffinitet | 184.87 kJ/mol |
Oxidationstal | 0, +2, +3, +4 (a mildly basic oxide) |
Jonisationspotential |
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Upptäckt | Carl Auer von Welsbach (1885) |
Upptäckten av neodym Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach, who also discovered praseodymium. The name neodymium is derived from the Greek words neos (νέος), new, and didymos (διδύμος), twin. |