Eŭropio
63
Eu
Grupo
Neniu
Perio
6
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
63
63
89
Ĝeneralaj Propraĵoj
Atoma Nombro
63
Atommaso
151,964
Amasa Nombro
152
Kategorio
Lantanoidoj
Koloro
Arĝento
Radioaktiva
Ne
Europium was named after Europe
Kristala Strukturo
Korpo Centrita Kubo
Historio
Europium was first found by Paul Émile Lecoq de Boisbaudran in 1890.
In 1896, French chemist Eugène-Antole Demarçay identified spectroscopic lines in ‘samarium' caused by europium.
He successfully isolated europium in 1901 using repeated crystallizations of samarium magnesium nitrate.
In 1896, French chemist Eugène-Antole Demarçay identified spectroscopic lines in ‘samarium' caused by europium.
He successfully isolated europium in 1901 using repeated crystallizations of samarium magnesium nitrate.
Elektronoj per ŝelo
2, 8, 18, 25, 8, 2
Elektrona Agordo
[Xe] 4f7 6s2
Europium is the most reactive rare earth element
Fizikaj Propraĵoj
Fazo
Solido
Denso
5,243 g/cm3
Fandpunkto
1099,15 K | 826 °C | 1518,8 °F
Bolpunkto
1802,15 K | 1529 °C | 2784,2 °F
Varmo de Fuzio
9,2 kJ/mol
Varmo de Vaporiĝo
175 kJ/mol
Specifa Varmo Kapacito
0,182 J/g·K
Krusta Abundo
0,00018%
Universa Abundo
5×10-8%
CAS Nombro
7440-53-1
PubChem Kunmetita Identiga Nombro
23981
Atomaj Propraĵoj
Atoma Radiuso
180 pm
Kovalenta Radiuso
198 pm
Elektronegativeco
1,2 (Pauling-skalo)
Potencialo de jonigo
5,6704 eV
Atoma Volumo
20,8 cm3/mol
Termika Kondukto
0,139 W/cm·K
Oksidaj Ŝtatoj
2, 3
Aplikoj
Europium is used in the manufacture of fluorescent glass.
It is also used in the anti-counterfeiting phosphors in Euro banknotes.
Europium-doped plastic has been used as a laser material.
Europium isotopes are good neutron absorbers and are used in nuclear reactor control rods.
It is also used in the anti-counterfeiting phosphors in Euro banknotes.
Europium-doped plastic has been used as a laser material.
Europium isotopes are good neutron absorbers and are used in nuclear reactor control rods.
Europium is considered to be mildly toxic
Izotopoj
Stabilaj Izotopoj
151Eu, 153EuMalstabilaj Isotopoj
130Eu, 131Eu, 132Eu, 133Eu, 134Eu, 135Eu, 136Eu, 137Eu, 138Eu, 139Eu, 140Eu, 141Eu, 142Eu, 143Eu, 144Eu, 145Eu, 146Eu, 147Eu, 148Eu, 149Eu, 150Eu, 152Eu, 154Eu, 155Eu, 156Eu, 157Eu, 158Eu, 159Eu, 160Eu, 161Eu, 162Eu, 163Eu, 164Eu, 165Eu, 166Eu, 167Eu