Plantilya:Infobox erbium

Erbium
68Er
- ↑ Er ↓ Fm Periodic table holmium ← erbium → thulium
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	erbium, Er, 68
Paglitok	/ˈɜːrbiəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-bee-əm]]
Kategoriyang elemento	puthaw nga lantanido
Group, period, block	[[group {{{group}}} element|{{{group}}}]], 6, f
Gibug-aton sa atomo	167.259
Kontorno sa elektron	[Xe] 4f12 6s2 2, 8, 18, 30, 8, 2 Electron shells of erbium (2, 8, 18, 30, 8, 2)
History
Pagkadiskobre	Carl Gustaf Mosander (1842)
Physical properties
Phase	magahi
Density (near r.t.)	9.066 g·cm−3
Liquid density at m.p.	8.86 g·cm−3
Melting point	1802 K, 1529 °C, 2784 °F
Boiling point	3141 K, 2868 °C, 5194 °F
Heat of fusion	19.90 kJ·mol−1
Heat of vaporization	280 kJ·mol−1
Molar heat capacity	28.12 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1504 1663 (1885) (2163) (2552) (3132)
Atomic properties
Oxidation states	3, 2, 1 (basic oxide)
Electronegativity	1.24 (Pauling scale)
Ionization energies	1st: 589.3 kJ·mol−1
	2nd: 1150 kJ·mol−1
	3rd: 2194 kJ·mol−1
Atomic radius	176 pm
Covalent radius	189±6 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic at 300 K
Electrical resistivity	(r.t.) (poly) 0.860 µΩ·m
Thermal conductivity	14.5 W·m−1·K−1
Thermal expansion	(r.t.) (poly) 12.2 µm/(m·K)
Speed of sound (thin rod)	(20 °C) 2830 m·s−1
Young's modulus	69.9 GPa
Shear modulus	28.3 GPa
Bulk modulus	44.4 GPa
Poisson ratio	0.237
Vickers hardness	589 MPa
Brinell hardness	814 MPa
CAS registry number	7440-52-0
Most stable isotopes
Main article: Isotopes of erbium
iso NA half-life DM DE (MeV) DP 160Er syn 28.58 h ε 0.330 160Ho 162Er 0.139% >1.4×1014 y α 1.6460 158Dy β+β+ 1.8445 162Dy 164Er 1.601% 164Er is stable with 96 neutrons 165Er syn 10.36 h ε 0.376 165Ho 166Er 33.503% 166Er is stable with 98 neutrons 167Er 22.869% 167Er is stable with 99 neutrons 168Er 26.978% 168Er is stable with 100 neutrons 169Er syn 9.4 d β− 0.351 169Tm 170Er 14.910% >3.2×1017 y α 0.0502 166Dy β−β− 0.6536 170Yb 171Er syn 7.516 h β− 1.490 171Tm 172Er syn 49.3 h β− 0.891 172Tm