Неодиум

60
Nd
Група
Нема одговор
Периода
6
блок
f
Protons
Electrons
Neutrons
60
60
84
Општи Својства
Атомски број
60
Атомска тежина
144,242
Mass Number
144
Category
Ланта­ноид
Color
Silver
Radioactive
Не
From the Greek word neos meaning new, and didymos, twin
Кристална структура
Simple 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.
Electrons per shell
2, 8, 18, 22, 8, 2
Електронска конфигурација
[Xe] 4f4 6s2
Nd
Most of the world's neodymium is mined in China
Физички Својства
Фаза
Solid
Густина
7,007 g/cm3
Точка на топење
1297,15 K | 1024 °C | 1875,2 °F
Точка на вриење
3347,15 K | 3074 °C | 5565,2 °F
Топлина на топење
7,1 kJ/mol
Топлина на испарување
285 kJ/mol
Specific Heat Capacity
0,19 J/g·K
Abundance in Earth's crust
0,0033%
Abundance in Universe
1×10-6%
Ultrapure
Кредити на слика: Images-of-elements
Ultrapure neodymium under argon
CAS Number
7440-00-8
PubChem CID Number
23934
Атомски Својства
Атомски полупречник
181 pm
Ковалентен полупречник
201 pm
Електронегативност
1,14 (Полингова скала)
Ionization Potential
5,525 eV
Atomic Volume
20,6 cm3/mol
Thermal Conductivity
0,165 W/cm·K
Oxidation States
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
Isotopes
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