ଛାଞ୍ଚ:Infobox Lutetium

Lutetium,  ₇₁Lu

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	lutetium, Lu
Appearance	silvery white
ଉଚ୍ଚାରଣ	/ljuːˈtiːʃiəm/ lew-TEE-shee-əm
Lutetium in the periodic table
Y ↑ Lu ↓ Lr ytterbium ← lutetium → hafnium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	71
ଶ୍ରେଣୀ, ବ୍ଳକ	group n/a, d-block
ପର୍ଯ୍ୟାୟ	period 6
ମୌଳିକ ପ୍ରକାର	lanthanide, sometimes considered a transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)	174.9668(4)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Xe] 6s2 4f14 5d1
per shell	2, 8, 18, 32, 9, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	1925 K ​(1652 °C, ​3006 °F)
ସ୍ଫୁଟନାଙ୍କ	3675 K ​(3402 °C, ​6156 °F)
Density near r.t.	9.841 g/cm3
when liquid, at m.p.	9.3 g/cm3
Heat of fusion	ca. 22 kJ/mol
Heat of	414 kJ/mol
Molar heat capacity	26.86 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1906 2103 2346 (2653) (3072) (3663)
Atomic properties
Oxidation states	3, 2, 1 (weakly basic oxide)
Electronegativity	Pauling scale: 1.27
Atomic radius	empirical: 174 pm
Covalent radius	187±8 pm
Miscellanea
Crystal structure	​hexagonal close-packed (hcp)
Thermal expansion	(r.t.) (poly) 9.9 µm/(m·K)
Thermal conductivity	16.4 W/(m·K)
Electrical resistivity	(r.t.) (poly) 582 n Ω·m
Magnetic ordering	paramagnetic
Young's modulus	68.6 GPa
Shear modulus	27.2 GPa
Bulk modulus	47.6 GPa
Poisson ratio	0.261
Vickers hardness	1160 MPa
Brinell hardness	893 MPa
CAS Number	7439-94-3
ଇତିହାସ
ଆବିଷ୍କାର	Georges Urbain and Carl Auer von Welsbach (1906)
First isolation	Carl Auer von Welsbach (1906)
Most stable isotopes of lutetium
iso NA half-life DM DE (MeV) DP 173Lu syn 1.37 y ε 0.671 173Yb 174Lu syn 3.31 y ε 1.374 174Yb 175Lu 97.41% 175Lu is stable with 104 neutrons 176Lu 2.59% 3.78×1010 y β− 1.193 176Hf

References

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