Neodym
60
Nd
Grupp
Ej tillämplig
Period
6
Block
f
Protoner
Elektroner
Neutroner
60
60
84
Generella Egenskaper
Atomnummer
60
Atommassa
144,242
Masstal
144
Kategori
Lantanoider
Färg
Silver
Radioaktiv
Nej
From the Greek word neos meaning new, and didymos, twin
Kristallstruktur
Enkelt hexagonalt
Historia
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.
Elektroner per skal
2, 8, 18, 22, 8, 2
Elektronkonfiguration
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fysikaliska Egenskaper
Aggregationstillstånd
Fast
Densitet
7,007 g/cm3
Smältpunkt
1297,15 K | 1024 °C | 1875,2 °F
Kokpunkt
3347,15 K | 3074 °C | 5565,2 °F
Smältvärme
7,1 kJ/mol
Ångbildningsvärme
285 kJ/mol
Specifik värmekapacitet
0,19 J/g·K
Förekomst i jordskorpan
0,0033%
Förekomst i universum
1×10-6%
CAS-nummer
7440-00-8
PubChem CID-nummer
23934
Atomära Egenskaper
Atomradie
181 pm
Kovalent radie
201 pm
Elektronegativitet
1,14 (Paulingskalan)
Jonisationspotential
5,525 eV
Molvolym
20,6 cm3/mol
Värmeledningsförmåga
0,165 W/cm·K
Oxidationstillstånd
2, 3
Användningsområden
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
Isotoper
Stabila isotoper
142Nd, 143Nd, 145Nd, 146Nd, 148NdInstabila isotoper
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