Neodyymi
60
Nd
Ryhmä
Ei saatavilla
Jakso
6
Lohko
f
Protonia
Elektronit
Neutronia
60
60
84
Yleiset ominaisuudet
Järjestysluku
60
Atomipaino
144,242
Massaluku
144
Luokka
Lantanoidit
Väri
Hopea
Radioaktiivisuus
Ei
From the Greek word neos meaning new, and didymos, twin
Kiderakenne
Yksinkertainen kuusikulmainen
Historia
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.
Elektroneja elektronikuorilla
2, 8, 18, 22, 8, 2
Orbitaalirakenne
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
7,007 g/cm3
Sulamispiste
1297,15 K | 1024 °C | 1875,2 °F
Kiehumispiste
3347,15 K | 3074 °C | 5565,2 °F
Sulamislämpö
7,1 kJ/mol
Höyrystymislämpö
285 kJ/mol
Ominaislämpökapasiteetti
0,19 J/g·K
Esiintyvyys maankuoressa
0,0033%
Esiintyvyys maailmankaikkeudessa
1×10-6%
CAS-numero
7440-00-8
PubChem CID-numero
23934
Atomiominaisuudet
Atomisäde
181 pm
Kovalenttisäde
201 pm
Elektronegatiivisuus
1,14 (Paulingin asteikko)
Ionisoitumispotentiaali
5,525 eV
Moolitilavuus
20,6 cm3/mol
Lämmönjohtavuus
0,165 W/cm·K
Hapetusluvut
2, 3
Käyttö
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
Isotooppi
Vakaat isotoopit
142Nd, 143Nd, 145Nd, 146Nd, 148NdEpävakaat isotoopit
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