Yevropiy
63
Eu
Guruh
Nomaʼlum
Davr
6
Blok
f
Protonlar
Elektronlar
Neytronlar
63
63
89
Umumiy xususiyatlar
Atom raqami
63
Atom massasi
151,964
Mass raqami
152
Turkum
Lantanoidlar
Ranggi
Kumush
Radioaktivlik
Yoʻq
Europium was named after Europe
Kristall tuzilma
Tana markazli kubik
Tarix
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.
Qobiqdagi elektronlar soni
2, 8, 18, 25, 8, 2
Elektron konfiguratsiyasi
[Xe] 4f7 6s2
Europium is the most reactive rare earth element
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
5,243 g/cm3
Erish harorati
1099,15 K | 826 °C | 1518,8 °F
Qaynash harorati
1802,15 K | 1529 °C | 2784,2 °F
Eritish issiqligi
9,2 kJ/mol
Bugʻlanish issiqligi
175 kJ/mol
Solishtirma issiqlik sigʻimi
0,182 J/g·K
Yer po‘stidagi miqdori
0,00018%
Olamdagi miqdori
5×10-8%
CAS raqami
7440-53-1
PubChem CID raqami
23981
Atom xususiyatlari
Atom radiusi
180 pm
Kovalentlik radiusi
198 pm
Elektrmanfiylik
1,2 (Poling boʻyicha)
Ionlashish potensiali
5,6704 eV
Molyar hajm
20,8 cm3/mol
Issiqlik oʻtkazuvchanlik
0,139 W/cm·K
Oksidlanish darajasi
2, 3
Qo‘llanilish sohalari
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
Izotoplar
Barqaror izotoplar
151Eu, 153EuBeqaror izotoplar
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