Neodimij
60
Nd
Skupina
n/a
Perioda
6
Blok
f
Protoni
Elektroni
Neutroni
60
60
84
Opća svojstva
Atomski broj
60
Relativna atomska masa
144,242
Maseni broj
144
Kategorija
Lantanoidi
Boja
Srebrna
Radioaktivan
Ne
Od grčke riječi neos, nov, i didymos, blizanac
Kristalna struktura
Jednostavna heksagonska
Povijest
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.
Elektrona po ljusci
2, 8, 18, 22, 8, 2
Elektronska konfiguracija
[Xe] 4f4 6s2
Most of the world's neodymium is mined in China
Fizikalna svojstva
Agregacijsko stanje
Čvrsto
Gustoća
7,007 g/cm3
Talište
1297,15 K | 1024 °C | 1875,2 °F
Vrelište
3347,15 K | 3074 °C | 5565,2 °F
Toplina taljenja
7,1 kJ/mol
Toplina isparavanja
285 kJ/mol
Specifični toplinski kapacitet
0,19 J/g·K
Zastupljenost u Zemljinoj kori
0,0033%
Zastupljenost u svemiru
1×10-6%
CAS broj
7440-00-8
PubChem CID broj
23934
Atomska svojstva
Atomski radijus
181 pm
Kovalentni radijus
201 pm
Elektronegativnost
1,14 (Paulingova ljestvica)
Potencijal ionizacije
5,525 eV
Atomski volumen
20,6 cm3/mol
Toplinska vodljivost
0,165 W/cm·K
Stanja oksidacije
2, 3
Primjene
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
Izotopi
Stabilni izotopi
142Nd, 143Nd, 145Nd, 146Nd, 148NdNestabilni izotopi
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