Ytrium

39
Y
Kumpulan
3
Kala
5
Blok
d
Proton
Elektron
Neutron
39
39
50
Ciri-Ciri Am
Nombor atom
39
Berat atom
88.90585
Nombor jisim
89
Kategori
Logam peralihan
Warna
Perak
Radioaktif
Tidak
Named after Ytterby, a village in Sweden near Vauxholm
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 9, 2
Konfigurasi elektron
[Kr] 4d1 5s2
Y
Finely divided yttrium is very unstable in air
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
4.469 g/cm3
Takat lebur
1799.15 K | 1526 °C | 2778.8 °F
Takat didih
3609.15 K | 3336 °C | 6036.8 °F
Haba pelakuran
11.4 kJ/mol
Haba pengewapan
380 kJ/mol
Muatan haba molar
0.298 J/g·K
Banyak pada kerak bumi
0.0029%
Banyak pada alam semesta
7×10-7%
High
Kredit imej: Wikimedia Commons (Alchemist-hp)
High purity yttrium
Nombor CAS
7440-65-5
PubChem CID Number
23993
Ciri-Ciri Atom
Jejari atom
180 pm
Jejari kovalen
190 pm
Keelektronegatifan
1.22 (Skala Pauling)
Kebolehan mengion
6.2173 eV
Isipadu atom
19.8 cm3/mol
Daya pengaliran terma
0.172 W/cm·K
Keadaan pengoksidaan
1, 2, 3
Aplikasi
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
Isotop
Isotop stabil
89Y
Isotop tidak stabil
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