Neodymium
60
Nd
Gruppe
n/a
Periode
6
Blok
f
Protoner
Elektroner
Neutroner
60
60
84
Generelle Egenskaber
Atomnummer
60
Atommasse
144,242
Masseantal
144
Kategori
Lantanider
Farve
Sølv
Radioaktiv
Nej
From the Greek word neos meaning new, and didymos, twin
Krystalstruktur
Simpel Hexagonal
Historie
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 i hver skal
2, 8, 18, 22, 8, 2
Elektronkonfiguration
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fysiske Egenskaber
Tilstandsform
Fast stof
Massefylde
7,007 g/cm3
Smeltepunkt
1297,15 K | 1024 °C | 1875,2 °F
Kogepunkt
3347,15 K | 3074 °C | 5565,2 °F
Smeltevarme
7,1 kJ/mol
Fordampningsvarme
285 kJ/mol
Varmefylde
0,19 J/g·K
Forekomst i jordskorpen
0,0033%
Forekomst i universet
1×10-6%
CAS-nummer
7440-00-8
PubChem CID-nummer
23934
Atomare egenskaber
Atomradius
181 pm
Kovalent radius
201 pm
Elektronegativitet
1,14 (Paulings skala)
Ioniseringspotentiale
5,525 eV
Atomvolumen
20,6 cm3/mol
Varmeledningsevne
0,165 W/cm·K
Oxidationstrin
2, 3
Anvendelser
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
Stabile isotoper
142Nd, 143Nd, 145Nd, 146Nd, 148NdUstabile 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