Neodim
60
Nd
Skupina
n/p
Perioda
6
Blok
f
Protoni
Elektroni
Nevtroni
60
60
84
Splošne lastnosti
Vrstno število
60
Atomska teža
144,242
Masno število
144
Kategorija
Lantanoidi
Barva
Srebrna
Radioaktivno
Ne
From the Greek word neos meaning new, and didymos, twin
Kristalna struktura
Heksagonalna
Zgodovina
Neodymium was first identified in 1885, in Vienna, by the Austrian chemist Carl Auer von Welsbach.
It was discovered in didymium, a substance incorrectly said by Carl Gustav Mosander to be a new element in 1841.
Pure neodymium metal was isolated in 1925.
It was discovered in didymium, a substance incorrectly said by Carl Gustav Mosander to be a new element in 1841.
Pure neodymium metal was isolated in 1925.
Elektroni po lupinah
2, 8, 18, 22, 8, 2
Razporeditev elektronov
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
7,007 g/cm3
Tališče
1297,15 K | 1024 °C | 1875,2 °F
Vrelišče
3347,15 K | 3074 °C | 5565,2 °F
Talilna toplota
7,1 kJ/mol
Izparilna toplota
285 kJ/mol
Toplotna kapaciteta
0,19 J/g·K
Zastopanost v Zemljini skorji
0,0033%
Zastopanost v vesolju
1×10-6%
CAS številka
7440-00-8
PubChem CID številka
23934
Atomske lastnosti
Atomski polmer
181 pm
Kovalentni polmer
201 pm
Elektronegativnost
1,14 (Paulingova lestvica)
Ionizacijski potencial
5,525 eV
Atomski volumen
20,6 cm3/mol
Toplotna prevodnost
0,165 W/cm·K
Oksidacijska stanja
2, 3
Uporabe
Neodymium is used to make specialized goggles for glass blowers.
Neodymium magnets appear in products such as microphones, professional loudspeakers, in-ear headphones, guitar and bass guitar pick-ups and computer hard disks.
Glass containing neodymium can be used as a laser material to produce coherent light.
Neodymium magnets appear in products such as microphones, professional loudspeakers, in-ear headphones, guitar and bass guitar pick-ups and computer hard disks.
Glass containing neodymium can be used as a laser material to produce coherent light.
Neodymium is considered to be moderately toxic
Izotopi
Stabilni izotopi
142Nd, 143Nd, 145Nd, 146Nd, 148NdNestabilni izotopi
124Nd, 125Nd, 126Nd, 127Nd, 128Nd, 129Nd, 130Nd, 131Nd, 132Nd, 133Nd, 134Nd, 135Nd, 136Nd, 137Nd, 138Nd, 139Nd, 140Nd, 141Nd, 144Nd, 147Nd, 149Nd, 150Nd, 151Nd, 152Nd, 153Nd, 154Nd, 155Nd, 156Nd, 157Nd, 158Nd, 159Nd, 160Nd, 161Nd