Lutetium

71
Lu
Golongan
n/a
Periode
6
Blok
d
Proton
Elektron
Neutron
71
71
104
Sifat Umum
Nomor atom
71
Massa atom
174,9668
Nomor massa
175
Kategori
Lantanida
Warna
Perak
Radioaktif
Tidak
Lutetia is the ancient name for Paris
Struktur kristal
Segienam Sederhana
Sejarah
French chemist Georges Urbain successfully separated lutetium from ytterbia in 1907 in Paris.

Austrian scientist Carl Auer von Welsbach and American chemist Charles James also succeeded in isolating lutetium independently in the same year.

Pure lutetium metal was first produced in 1953.
Elektron per kulit
2, 8, 18, 32, 9, 2
Konfigurasi elektron
[Xe] 4f14 5d1 6s2
Lu
Lutetium was the last natural rare earth element to be discovered
Sifat Fisika
Fase
Solid
Kepadatan
9,84 g/cm3
Titik lebur
1925,15 K | 1652 °C | 3005,6 °F
Titik didih
3675,15 K | 3402 °C | 6155,6 °F
Kalor peleburan
22 kJ/mol
Kalor penguapan
415 kJ/mol
Kapasitas kalor molar
0,154 J/g·K
Kelimpahan di kerak bumi
0,000056%
Kelimpahan di alam semesta
1×10-8%
Ultrapure
Kredit Gambar: Images-of-elements
Ultrapure piece of lutetium
Nomor CAS
7439-94-3
PubChem CID Number
23929
Sifat Atom
Jari-jari atom
174 pm
Jari-jari kovalen
187 pm
Elektronegativitas
1,27 (Skala Pauling)
Potensi Ionisasi
5,4259 eV
Volume atom
17,78 cm3/mol
Kondusivitas termal
0,164 W/cm·K
Bilangan oksidasi
3
Aplikasi
Lutetium oxide is used to make catalysts for cracking hydrocarbons in the petrochemical industry.

Lutetium aluminum garnet has been proposed for use as a lens material in high refractive index immersion lithography.

Lutetium is used as a phosphor in LED light bulbs.
Lutetium is considered to be non toxic
Isotop
Isotop stabil
175Lu
Isotop tidak stabil
150Lu, 151Lu, 152Lu, 153Lu, 154Lu, 155Lu, 156Lu, 157Lu, 158Lu, 159Lu, 160Lu, 161Lu, 162Lu, 163Lu, 164Lu, 165Lu, 166Lu, 167Lu, 168Lu, 169Lu, 170Lu, 171Lu, 172Lu, 173Lu, 174Lu, 176Lu, 177Lu, 178Lu, 179Lu, 180Lu, 181Lu, 182Lu, 183Lu, 184Lu