Yttrium

39
Y
Groep
3
Periode
5
Blok
d
Protrone
Elektrone
Neutrone
39
39
50
Algemene Eienskappe
Atoom Nommer
39
Atoommassa
88,90585
Massa Nommer
89
Kategorie
Oorgangsmetale
Kleur
Silver
Radioaktief
Nee
Named after Ytterby, a village in Sweden near Vauxholm
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
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.
Elektrone per skil
2, 8, 18, 9, 2
Elektronkonfigurasie
[Kr] 4d1 5s2
Y
Finely divided yttrium is very unstable in air
Fisiese Eienskappe
Fase
Soliede
Digtheid
4,469 g/cm3
Smeltpunt
1799,15 K | 1526 °C | 2778,8 °F
Kookpunt
3609,15 K | 3336 °C | 6036,8 °F
Heat of Fusion
11,4 kJ/mol
Heat of Vaporization
380 kJ/mol
Spesifieke Hitte Kapasiteit
0,298 J/g·K
Oorvloed in die aardkors
0,0029%
Oorvloed in die heelal
7×10-7%
High
Beeld Krediete: Wikimedia Commons (Alchemist-hp)
High purity yttrium
CAS Nommer
7440-65-5
PubChem CID Nommer
23993
Atomiese Eienskappe
Atoom radius
180 pm
Kovalente Radius
190 pm
Elektronegatiewiteit
1,22 (Pauling scale)
Ionisasie potensiaal
6,2173 eV
Atoom volume
19,8 cm3/mol
Termiese geleidingsvermoë
0,172 W/cm·K
Oksidasiestate
1, 2, 3
Toepassings
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.
Exposure to yttrium compounds in humans may cause lung disease
Isotope
Stabiele Isotope
89Y
Onstabiele Isotope
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