Symbol | Nd |
Atomnummer | 60 |
Gruppe | - |
Periode | 6 |
Blok | f |
Klassifikation | Lanthanider |
Udseende | Silvery white |
Farve | Sølv |
Antal protoner | 60 p+ |
Antal neutroner | 84 n0 |
Antal elektroner | 60 e- |
Fase ved STP | Fast |
Massefylde | 7.01 g/cm3 |
Atommasse | 144.242 u |
Smeltepunkt | 1297 K 1023.85 °C 1874.93 °F |
Kogepunkt | 3347 K 3073.85 °C 5564.93 °F |
Fordampningsvarme | 283.68 kJ/mol |
Elektronegativitet (Pauling Scale) | 1.14 |
Elektronaffinitet | 184.87 kJ/mol |
Oxidationstrin | 0, +2, +3, +4 (a mildly basic oxide) |
Ioniseringsenergier |
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Opdaget | Carl Auer von Welsbach (1885) |
Opdagelse af 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. |