ଛାଞ୍ଚ:Infobox Dysprosium

Dysprosium,  ₆₆Dy

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	dysprosium, Dy
Appearance	silvery white
ଉଚ୍ଚାରଣ	/dɪsˈproʊziəm/ dis-PROH-zee-əm
Dysprosium in the periodic table
- ↑ Dy ↓ Cf terbium ← dysprosium → holmium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	66
ଶ୍ରେଣୀ, ବ୍ଳକ	group n/a, f-block
ପର୍ଯ୍ୟାୟ	period 6
ମୌଳିକ ପ୍ରକାର	lanthanide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)	162.500
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Xe] 4f10 6s2
per shell	2, 8, 18, 28, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	1680 K ​(1407 °C, ​2565 °F)
ସ୍ଫୁଟନାଙ୍କ	2840 K ​(2562 °C, ​4653 °F)
Density near r.t.	8.540 g/cm3
when liquid, at m.p.	8.37 g/cm3
Heat of fusion	11.06 kJ/mol
Heat of	280 kJ/mol
Molar heat capacity	27.7 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1378 1523 (1704) (1954) (2304) (2831)
Atomic properties
Oxidation states	3, 2, 1 (weakly basic oxide)
Electronegativity	Pauling scale: 1.22
Atomic radius	empirical: 178 pm
Covalent radius	192±7 pm
Miscellanea
Crystal structure	​hexagonal close-packed (hcp)
Speed of sound thin rod	2710 m/s (at 20 °C)
Thermal expansion	(r.t.) (α, poly) 9.9 µm/(m·K)
Thermal conductivity	10.7 W/(m·K)
Electrical resistivity	(r.t.) (α, poly) 926 n Ω·m
Magnetic ordering	paramagnetic at 300 K
Young's modulus	(α form) 61.4 GPa
Shear modulus	(α form) 24.7 GPa
Bulk modulus	(α form) 40.5 GPa
Poisson ratio	(α form) 0.247
Vickers hardness	540 MPa
Brinell hardness	500 MPa
CAS Number	7429-91-6
ଇତିହାସ
ଆବିଷ୍କାର	Lecoq de Boisbaudran (1886)
Most stable isotopes of dysprosium
iso NA half-life DM DE (MeV) DP 154Dy syn 3.0×106 y α 2.947 150Gd 156Dy 0.06% >1×1018 y α 2.0108 152Gd β+β+ 1.7579 156Gd 158Dy 0.10% 158Dy is stable with 92 neutrons 160Dy 2.34% 160Dy is stable with 94 neutrons 161Dy 18.91% 161Dy is stable with 95 neutrons 162Dy 25.51% 162Dy is stable with 96 neutrons 163Dy 24.90% 163Dy is stable with 97 neutrons 164Dy 28.18% 164Dy is stable with 98 neutrons

References

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