Neodymium
60
Nd
Groep
n.v.t.
Periode
6
Blok
f
Protonen
Elektronen
Neutronen
60
60
84
Algemene Eigenschappen
Atoomnummer
60
Atomair gewicht
144,242
Massa Getal
144
Categorie
Lanthaniden
Kleur
Zilver
Radioactief
Nee
From the Greek word neos meaning new, and didymos, twin
Kristalstructuur
Eenvoudige Hexagonaal
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.
Eletronen per schil
2, 8, 18, 22, 8, 2
Electronconfiguratie
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fysieke Eigenschappen
Fase
Vast
Dichtheid
7,007 g/cm3
Smeltpunt
1297,15 K | 1024 °C | 1875,2 °F
Kookpunt
3347,15 K | 3074 °C | 5565,2 °F
Fusiewarmte
7,1 kJ/mol
Verdampingswarmte
285 kJ/mol
Specifieke Warmtecapaciteit
0,19 J/g·K
Overvloedig aanwezig in de aardkorst
0,0033%
Overvloedig aanwezig in het universum
1×10-6%
CAS-nummer
7440-00-8
PubChem CID nummer
23934
Atoomeigenschappen
Atoomstraal
181 pm
Covalentiestraal
201 pm
Electronegativiteit
1,14 (Pauling schaal)
Ionisatiepotentiaal
5,525 eV
Atoomvolume
20,6 cm3/mol
Thermische geleiding
0,165 W/cm·K
Oxidatietoestanden
2, 3
Toepassingen
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
Isotopen
Stabiele isotopen
142Nd, 143Nd, 145Nd, 146Nd, 148NdInstabiele isotopen
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