Yttrium
39
Y
Gruppe
3
Periode
5
Blokk
d
Protoner
Elektroner
Nøytroner
39
39
50
Generelle egenskaper
Atomnummer
39
Atomvekt
88,90585
Massetall
89
Kategori
Transisjonsmetaller
Farge
Sølv
Radioaktiv
Nei
Named after Ytterby, a village in Sweden near Vauxholm
Krystallstruktur
Simple Hexagonal
Historie
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.
Elektroner per energinivå
2, 8, 18, 9, 2
Elektronkonfigurasjon
[Kr] 4d1 5s2
Finely divided yttrium is very unstable in air
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
4,469 g/cm3
Smeltepunkt
1799,15 K | 1526 °C | 2778,8 °F
Kokepunkt
3609,15 K | 3336 °C | 6036,8 °F
Smeltevarme
11,4 kJ/mol
Fordampningsvarme
380 kJ/mol
Spesifikk varmekapasitet
0,298 J/g·K
Forekomst i jordskorpa
0,0029%
Forekomst i universet
7×10-7%
CAS Number
7440-65-5
PubChem CID Number
23993
Atomegenskaper
Atomradius
180 pm
Kovalent radius
190 pm
Elektronegativitet
1,22 (Pauling-skalaen)
Ioniseringsenergi
6,2173 eV
Molart volum
19,8 cm3/mol
Termisk ledningsevne
0,172 W/cm·K
Oksidasjonstilstander
1, 2, 3
Bruksområder
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
Isotoper
Stabile isotoper
89YUstabile isotoper
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