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mineralogy elements Er Erbium

Er - Erbium - METAL LANTHANIDES

1522°
2510°
167.259
3
68
Er
[Xe] 4f12 6s2
2
8
18
30
8
2
1.24
6.1077
Synthetic
Radioactive
Liquid
Gaseous
Erbium Electronic configuration diagram
Electronic configuration diagram

Name Erbium
Number 68
Atomic 167.259
Symbol Er
Fusion 1522
Boiling 2510
Density 9.066
Period 6
Group 0
Discovery 1843 Mosander
Abundance 3.5
Radius 2.5
Electronegativity 1.24
Ionization 6.1077
Number of isotopes 16
Electronic configuration [Xe] 4f12 6s2
Oxidation states 3
Electron by energy level 2,8,18,30,8,2

Mineral Hardness Density
Adamsite-(Y) 3.00 / 3.00
Caysichite-(Y) 4.50 / 4.50 3.03
Decrespignyite-(Y) 4.00 / 4.00 3.64
Dissakisite-(La) 6.50 / 7.00 3.79
Fluorcalciobritholite 5.50 / 5.50 4.20
Hingganite-(Y) 5.00 / 6.00
Iwashiroite-(Y) 6.00 / 6.00 7.10
Moskvinite-(Y) 5.00 / 5.00 2.91
Samarskite-(Yb) 5.00 / 6.00 7.03
Yakovenchukite-(Y) 5.00 / 5.00 2.83