Erbium

68
Er
Kumpulan
Tiada
Kala
6
Blok
f
Proton
Elektron
Neutron
68
68
99
Ciri-Ciri Am
Nombor atom
68
Berat atom
167.259
Nombor jisim
167
Kategori
Lantanid
Warna
Perak
Radioaktif
Tidak
Erbium was named after Ytterby, a town in Sweden
Struktur hablur
Hexagonal Ringkas
Sejarah
Erbium was discovered in 1843 by Swedish chemist Carl Gustaf Mosander, who detected it as an impurity in yttria.

Using ammonium hydroxide he precipitated fractions of different basicity from yttria.

In these fractions he found that the fraction that contained the pink color was erbium.
Bilangan elektron per petala
2, 8, 18, 30, 8, 2
Konfigurasi elektron
[Xe] 4f12 6s2
Er
The highest concentration of erbium in humans is in the bones
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
9.066 g/cm3
Takat lebur
1802.15 K | 1529 °C | 2784.2 °F
Takat didih
3141.15 K | 2868 °C | 5194.4 °F
Haba pelakuran
19.9 kJ/mol
Haba pengewapan
285 kJ/mol
Muatan haba molar
0.168 J/g·K
Banyak pada kerak bumi
0.0003%
Banyak pada alam semesta
2×10-7%
Ultrapure
Kredit imej: Images-of-elements
Ultrapure erbium with cut traces
Nombor CAS
7440-52-0
PubChem CID Number
23980
Ciri-Ciri Atom
Jejari atom
176 pm
Jejari kovalen
189 pm
Keelektronegatifan
1.24 (Skala Pauling)
Kebolehan mengion
6.1077 eV
Isipadu atom
18.4 cm3/mol
Daya pengaliran terma
0.143 W/cm·K
Keadaan pengoksidaan
3
Aplikasi
Erbium is used in photographic filters to absorb infrared light.

Erbium oxide gives a pink color and has been used as a colorant in glasses and porcelain enamel glazes.

It is also used in nuclear technology in neutron-absorbing control rods.

Erbium is used in alloys especially with vanadium to decrease the hardness of metals.
Erbium is considered to be moderately toxic
Isotop
Isotop stabil
162Er, 164Er, 166Er, 167Er, 168Er, 170Er
Isotop tidak stabil
143Er, 144Er, 145Er, 146Er, 147Er, 148Er, 149Er, 150Er, 151Er, 152Er, 153Er, 154Er, 155Er, 156Er, 157Er, 158Er, 159Er, 160Er, 161Er, 163Er, 165Er, 169Er, 171Er, 172Er, 173Er, 174Er, 175Er, 176Er, 177Er