Gadolinio
64
Gd
Grupo
Neniu
Perio
6
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
64
64
93
Ĝeneralaj Propraĵoj
Atoma Nombro
64
Atommaso
157,25
Amasa Nombro
157
Kategorio
Lantanoidoj
Koloro
Arĝento
Radioaktiva
Ne
From gadolinite, a mineral named for Gadolin, a Finnish chemist
Kristala Strukturo
Simpla Sesangula
Historio
Gadolinium was first detected spectroscopically in 1880 by the Swiss chemist Jean Charles Galissard de Marignac who separated its oxide.
He observed spectroscopic lines due to gadolinium in samples of gadolinite and in the separate mineral cerite.
The metal was isolated by Paul Emile Lecoq de Boisbaudran in 1886.
He observed spectroscopic lines due to gadolinium in samples of gadolinite and in the separate mineral cerite.
The metal was isolated by Paul Emile Lecoq de Boisbaudran in 1886.
Elektronoj per ŝelo
2, 8, 18, 25, 9, 2
Elektrona Agordo
[Xe] 4f7 5d1 6s2
Gadolinium has the highest neutron cross-section among any stable nuclides
Fizikaj Propraĵoj
Fazo
Solido
Denso
7,895 g/cm3
Fandpunkto
1585,15 K | 1312 °C | 2393,6 °F
Bolpunkto
3546,15 K | 3273 °C | 5923,4 °F
Varmo de Fuzio
10 kJ/mol
Varmo de Vaporiĝo
305 kJ/mol
Specifa Varmo Kapacito
0,236 J/g·K
Krusta Abundo
0,00052%
Universa Abundo
2×10-7%
CAS Nombro
7440-54-2
PubChem Kunmetita Identiga Nombro
23982
Atomaj Propraĵoj
Atoma Radiuso
180 pm
Kovalenta Radiuso
196 pm
Elektronegativeco
1,2 (Pauling-skalo)
Potencialo de jonigo
6,1501 eV
Atoma Volumo
19,9 cm3/mol
Termika Kondukto
0,106 W/cm·K
Oksidaj Ŝtatoj
1, 2, 3
Aplikoj
Gadolinium is used to make gadolinium yttrium garnets which have microwave applications.
It is also used in intravenous radiocontrast agents in magnetic resonance imaging (MRI).
Gadolinium compounds are used for making green phosphors for color TV tubes, and in manufacturing compact discs.
It is also used in intravenous radiocontrast agents in magnetic resonance imaging (MRI).
Gadolinium compounds are used for making green phosphors for color TV tubes, and in manufacturing compact discs.
Gadolinium is considered to be moderately toxic
Izotopoj
Stabilaj Izotopoj
154Gd, 155Gd, 156Gd, 157Gd, 158Gd, 160GdMalstabilaj Isotopoj
134Gd, 135Gd, 136Gd, 137Gd, 138Gd, 139Gd, 140Gd, 141Gd, 142Gd, 143Gd, 144Gd, 145Gd, 146Gd, 147Gd, 148Gd, 149Gd, 150Gd, 151Gd, 152Gd, 153Gd, 159Gd, 161Gd, 162Gd, 163Gd, 164Gd, 165Gd, 166Gd, 167Gd, 168Gd, 169Gd