ଛାଞ୍ଚ:Infobox Ytterbium

Ytterbium,  ₇₀Yb

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	ytterbium, Yb
Appearance	silvery white
ଉଚ୍ଚାରଣ	/ˈtɜːrbiəm/ i-TUR-bee-əm
Ytterbium in the periodic table
- ↑ Yb ↓ No thulium ← ytterbium → lutetium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	70
ଶ୍ରେଣୀ, ବ୍ଳକ	group n/a, f-block
ପର୍ଯ୍ୟାୟ	period 6
ମୌଳିକ ପ୍ରକାର	lanthanide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)	173.054(5)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Xe] 4f14 6s2
per shell	2, 8, 18, 32, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	1097 K ​(824 °C, ​1515 °F)
ସ୍ଫୁଟନାଙ୍କ	1469 K ​(1196 °C, ​2185 °F)
Density near r.t.	6.90 g/cm3
when liquid, at m.p.	6.21 g/cm3
Heat of fusion	7.66 kJ/mol
Heat of	159 kJ/mol
Molar heat capacity	26.74 J/(mol·K)
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	Pauling scale: ? 1.1
Atomic radius	empirical: 176 pm
Covalent radius	187±8 pm
Miscellanea
Crystal structure	​face-centered cubic (fcc)
Speed of sound thin rod	1590 m/s (at 20 °C)
Thermal expansion	(r.t.) (β, poly) 26.3 µm/(m·K)
Thermal conductivity	38.5 W/(m·K)
Electrical resistivity	(r.t.) (β, poly) 0.250 µ Ω·m
Magnetic ordering	paramagnetic
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 Number	7440-64-4
ଇତିହାସ
ଆବିଷ୍କାର	Jean Charles Galissard de Marignac (1878)
First isolation	Georges Urbain (1907)
Most stable 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 β−β− 1.083 176Hf 177Yb syn 1.911 h β− 1.399 177Lu

References

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