Iterbyo

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Ytterbium
70Yb
-

Yb

No
thuliumytterbiumlutetium
Appearance
silvery white
General properties
Name, simbolo, kaiphan ytterbium, Yb, 70
Pronunciation Plantilya:IPAc-en Plantilya:Respell
Element category puthaw nga lantanido
Group, period, block [[group {{{group}}} element|{{{group}}}]], 6, f
Standard atomic weight 173.054(5)
Electron configuration [Xe] 4f14 6s2
2, 8, 18, 32, 8, 2
Electron shells of ytterbium (2, 8, 18, 32, 8, 2)
History
Discovery Jean Charles Galissard de Marignac (1878)
First isolation Georges Urbain (1907)
Physical properties
Phase magahi
Density (near r.t.) 6.90 g·cm−3
Liquid density at m.p. 6.21 g·cm−3
Melting point 1097 K, 824 °C, 1515 °F
Boiling point 1469 K, 1196 °C, 2185 °F
Heat of fusion 7.66 kJ·mol−1
Heat of vaporization 159 kJ·mol−1
Molar heat capacity 26.74 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 736 813 910 1047 (1266) (1465)
Atomic properties
Oxidation states 3, 2, 1

(basic oxide)

Electronegativity  ? 1.1 (Pauling scale)
Ionization energies 1st: 603.4 kJ·mol−1
2nd: 1174.8 kJ·mol−1
3rd: 2417 kJ·mol−1
Atomic radius 176 pm
Covalent radius 187±8 pm
Miscellanea
Crystal structure face-centered cubic
Ytterbium has a face-centered cubic crystal structure
Magnetic ordering paramagnetic
Electrical resistivity (r.t.) (β, poly) 0.250 µΩ·m
Thermal conductivity 38.5 W·m−1·K−1
Thermal expansion (r.t.) (β, poly) 26.3 µm/(m·K)
Speed of sound (thin rod) (20 °C) 1590 m·s−1
Young's modulus (β form) 23.9 GPa
Shear modulus (β form) 9.9 GPa
Bulk modulus (β form) 30.5 GPa
Poisson ratio (β form) 0.207
Vickers hardness 206 MPa
Brinell hardness 343 MPa
CAS registry number 7440-64-4
Most stable isotopes
Main article: Isotopes of ytterbium
iso NA half-life DM DE (MeV) DP
166Yb syn 56.7 h ε 0.304 166Tm
168Yb 0.13% >1.3×1014 y α 1.9508 164Er
β+β+ 1.4221 168Er
169Yb syn 32.026 d ε 0.909 169Tm
170Yb 3.04% 170Yb is stable with 100 neutrons
171Yb 14.28% 171Yb is stable with 101 neutrons
172Yb 21.83% 172Yb is stable with 102 neutrons
173Yb 16.13% 173Yb is stable with 103 neutrons
174Yb 31.83% 174Yb is stable with 104 neutrons
175Yb syn 4.185 d β 0.470 175Lu
176Yb 12.76% >1.6×1017 y α 0.570 172Er
ββ 1.083 176Hf
177Yb syn 1.911 h β 1.399 177Lu
t  h  u
· r

Ang iterbyo (Iningles ytterbium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Yb ug kaiphan nga atomik 70. Ang iterbyo mao ang puthaw nga lantanido.

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