Neodym
60
Nd
Gruppe
n/a
Periode
6
Blokk
f
Protons
Electrons
Neutrons
60
60
84
Generelle eigenskapar
Atomnummer
60
Atommasse
144,242
Mass Number
144
Kategori
Lantanid
Farge
Silver
Radioactive
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.
Elektron per energinivå
2, 8, 18, 22, 8, 2
Elektronkonfigurasjon
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
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
Fordampingsvarme
285 kJ/mol
Spesifikk varmekapasitet
0,19 J/g·K
Abundance in Earth's crust
0,0033%
Abundance in Universe
1×10-6%
CAS Number
7440-00-8
PubChem CID Number
23934
Atom eigenskapar
Atomradius
181 pm
Kovalent radius
201 pm
Elektronegativitet
1,14 (Paulings skala)
Ioniseringspotensial
5,525 eV
Molart volum
20,6 cm3/mol
Termisk konduktivitet
0,165 W/cm·K
Oksidasjonstrinn
2, 3
Applications
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
Isotopes
Stable Isotopes
142Nd, 143Nd, 145Nd, 146Nd, 148NdUnstable Isotopes
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