Neodymium

60
Nd
Gruppe
n/a
Periode
6
Blok
f
Protons
Electrons
Neutrons
60
60
84
General Properties
Atomnummer
60
Atommasse
144,242
Mass Number
144
Kategori
Lantanider
Farve
Silver
Radioactive
Nej
From the Greek word neos meaning new, and didymos, twin
Krystalstruktur
Simpel Hexagonal
History
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.
Elektroner i hver skal
2, 8, 18, 22, 8, 2
Elektronkonfiguration
[Xe] 4f4 6s2
Nd
Most of the world's neodymium is mined in China
Physical Properties
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
Abundance in Earth's crust
0,0033%
Abundance in Universe
1×10-6%
Ultrapure
Billede akkrediteringer: Images-of-elements
Ultrapure neodymium under argon
CAS Number
7440-00-8
PubChem CID Number
23934
Atomic Properties
Atomradius
181 pm
Kovalent radius
201 pm
Elektronegativitet
1,14 (Paulings skala)
Ionization Potential
5,525 eV
Atomic Volume
20,6 cm3/mol
Varmeledningsevne
0,165 W/cm·K
Oxidationstrin
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 is considered to be moderately toxic
Isotoper
Stable Isotopes
142Nd, 143Nd, 145Nd, 146Nd, 148Nd
Unstable 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