Neodym
60
Nd
Gruppe
I/T
Periode
6
Blokk
f
Protoner
Elektroner
Nøytroner
60
60
84
Generelle egenskaper
Atomnummer
60
Atomvekt
144,242
Massetall
144
Kategori
Lantanoider
Farge
Sølv
Radioaktiv
Nei
From the Greek word neos meaning new, and didymos, twin
Krystallstruktur
Simple 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 per energinivå
2, 8, 18, 22, 8, 2
Elektronkonfigurasjon
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
7,007 g/cm3
Smeltepunkt
1297,15 K | 1024 °C | 1875,2 °F
Kokepunkt
3347,15 K | 3074 °C | 5565,2 °F
Smeltevarme
7,1 kJ/mol
Fordampningsvarme
285 kJ/mol
Spesifikk varmekapasitet
0,19 J/g·K
Forekomst i jordskorpa
0,0033%
Forekomst i universet
1×10-6%
CAS Number
7440-00-8
PubChem CID Number
23934
Atomegenskaper
Atomradius
181 pm
Kovalent radius
201 pm
Elektronegativitet
1,14 (Pauling-skalaen)
Ioniseringsenergi
5,525 eV
Molart volum
20,6 cm3/mol
Termisk ledningsevne
0,165 W/cm·K
Oksidasjonstilstander
2, 3
Bruksområder
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