Itrij
39
Y
Skupina
3
Perioda
5
Blok
d
Protoni
Elektroni
Nevtroni
39
39
50
Splošne lastnosti
Vrstno število
39
Atomska teža
88,90585
Masno število
89
Kategorija
Prehodne kovine
Barva
Srebrna
Radioaktivno
Ne
Named after Ytterby, a village in Sweden near Vauxholm
Kristalna struktura
Heksagonalna
Zgodovina
In 1787, Carl Axel Arrhenius found a new mineral near Ytterby in Sweden and named it ytterbite, after the village.
Johan Gadolin discovered yttrium's oxide in Arrhenius' sample in 1789, and Anders Gustaf Ekeberg named the new oxide yttria.
Elemental yttrium was first isolated in 1828 by Friedrich Wöhler.
Johan Gadolin discovered yttrium's oxide in Arrhenius' sample in 1789, and Anders Gustaf Ekeberg named the new oxide yttria.
Elemental yttrium was first isolated in 1828 by Friedrich Wöhler.
Elektroni po lupinah
2, 8, 18, 9, 2
Razporeditev elektronov
[Kr] 4d1 5s2
Finely divided yttrium is very unstable in air
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
4,469 g/cm3
Tališče
1799,15 K | 1526 °C | 2778,8 °F
Vrelišče
3609,15 K | 3336 °C | 6036,8 °F
Talilna toplota
11,4 kJ/mol
Izparilna toplota
380 kJ/mol
Toplotna kapaciteta
0,298 J/g·K
Zastopanost v Zemljini skorji
0,0029%
Zastopanost v vesolju
7×10-7%
CAS številka
7440-65-5
PubChem CID številka
23993
Atomske lastnosti
Atomski polmer
180 pm
Kovalentni polmer
190 pm
Elektronegativnost
1,22 (Paulingova lestvica)
Ionizacijski potencial
6,2173 eV
Atomski volumen
19,8 cm3/mol
Toplotna prevodnost
0,172 W/cm·K
Oksidacijska stanja
1, 2, 3
Uporabe
Yttrium is often used in alloys, increasing the strength of aluminum and magnesium alloys.
Yttrium is one of the elements used to make the red color in CRT televisions.
It is also used as a deoxidizer for non-ferrous metals such as vanadium.
Yttrium can be used in laser systems and as a catalyst for ethylene polymerization reactions.
Yttrium is one of the elements used to make the red color in CRT televisions.
It is also used as a deoxidizer for non-ferrous metals such as vanadium.
Yttrium can be used in laser systems and as a catalyst for ethylene polymerization reactions.
Exposure to yttrium compounds in humans may cause lung disease
Izotopi
Stabilni izotopi
89YNestabilni izotopi
76Y, 77Y, 78Y, 79Y, 80Y, 81Y, 82Y, 83Y, 84Y, 85Y, 86Y, 87Y, 88Y, 90Y, 91Y, 92Y, 93Y, 94Y, 95Y, 96Y, 97Y, 98Y, 99Y, 100Y, 101Y, 102Y, 103Y, 104Y, 105Y, 106Y, 107Y, 108Y