Erbyo

Erbium
68Er
- ↑ Er ↓ Fm Periodic table holmium ← erbium → thulium
Appearance
silvery white
General properties
Name, simbolo, kaiphan	erbium, Er, 68
Pronunciation	Plantilya:IPAc-en Plantilya:Respell
Element category	puthaw nga lantanido
Group, period, block	[[group {{{group}}} element|{{{group}}}]], 6, f
Standard atomic weight	167.259
Electron configuration	[Xe] 4f12 6s2 2, 8, 18, 30, 8, 2
History
Discovery	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

Ang erbyo (Iningles erbium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Er ug kaiphan nga atomik 68. Ang erbyo mao ang puthaw nga lantanido.

Galeriya sa hulagway

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