CAS Number7440-69-9
PubChem CID5359367
Атомен радиус156
Моларен обем21,3
Атомна маса208,98
Температура на кипене1 564
Bulk Modulus
КатегорияСлед преходни метали
Кристална структураМоноклинна центрирана в основата
Ковалентен радиус148
Electrical Resistivity
Електронна конфигурация[Xe] 4f14 5d10 6s2 6p3
Електрон на обвивка2, 8, 18, 32, 18, 5
Топлина на сливането10,9
Топлина на изпаряване160
Йонизационен потенциал7,286
Magnetic Ordering
Magnetic Susceptibility
Mass Number83
Температура на топене271,5
Атомен номер209
Оксидационни държави-3, 3, 5
Poisson Ratio
Shear Modulus
Специфичен топлинен капацитет0,122
Van der Waals radius
Young's Modulus
Изобилие в земната кора2.5×10-6%
Изобилие в вселената7×10-8%
Bi Бисмут 83 208.9804 15 6 p 83 271.0 1560.0 [Xe] 4f14 5d10 6s2 6p3 2 8 18 32 18 5 9.75 2.5E-6% Gray Rhombohedral 2.0 2.01 {"1":"703","2":"1610","3":"2466","4":"4370","5":"5400","6":"8520"} 711 91.2 170 +3,5 1.7 21.3 11.0 179.0 0.122 7.87 0 1.9×101919y AlphaEmission Solid, Diamagnetic, Conductor, Metal, Stable, Natural, PoorMetal BIZ-meth Hard, brittle, steel-gray metal with a pink tint. Main use is in pharmaceuticals and low melting point alloys used as fuses. It can be found free in nature and in minerals like bismuthine (Bi2O3) and in bismuth ochre (Bi2O3) jUHN9a1zNA4 Bismuth
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. Erbium was named after Ytterby, a town in Sweden 83 From the German word "bisemutum"

Isotopes of Erbium

Standard Atomic Weight


Стабилни изотопи


Нестабилни изотопи

184Bi 185Bi 186Bi 187Bi 188Bi 189Bi 190Bi 191Bi 192Bi 193Bi 194Bi 195Bi 196Bi 197Bi 198Bi 199Bi 200Bi 201Bi 202Bi 203Bi 204Bi 205Bi 206Bi 207Bi 208Bi 210Bi 211Bi 212Bi 213Bi 214Bi 215Bi 216Bi 217Bi 218Bi

Erbium is considered to be moderately toxic
The highest concentration of erbium in humans is in the bones
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.