మూస:Infobox dysprosium

డిస్ప్రోసియం, ₀₀Dy
డిస్ప్రోసియం
Pronunciation	/dɪsˈproʊziəm/ (dis-PROH-zee-əm)
Appearance	silvery white
Standard atomic weight Ar°(Dy)
	162.500±0.001; 162.50±0.01 (abridged);
డిస్ప్రోసియం in the periodic table
	టెర్బియం ← డిస్ప్రోసియం → హోల్మియం
Group	మూస:Infobox element/symbol-to-group/format
Period	period 6
Block	f-block
Electron configuration	[Xe] 4f10 6s2
Electrons per shell	2, 8, 18, 28, 8, 2
Physical properties
Phase at STP	solid
Melting point	1680 K (1407 °C, 2565 °F)
Boiling point	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 vaporization	280 kJ/mol
Molar heat capacity	27.7 J/(mol·K)
Atomic properties
Oxidation states	0, +1, +2, +3, +4 (a weakly basic oxide)
Electronegativity	Pauling scale: 1.22
Atomic radius	empirical: 178 pm
Covalent radius	192±7 pm
	Spectral lines of డిస్ప్రోసియం
Other properties
Natural occurrence	primordial
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
History
Discovery	Lecoq de Boisbaudran (1886)
Isotopes of డిస్ప్రోసియం v; e;
	Template:infobox డిస్ప్రోసియం isotopes does not exist
	Category: డిస్ప్రోసియం; view; talk; edit; \| references

References

↑ "Standard Atomic Weights: Dysprosium". CIAAW. 2001.
↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
↑ Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017. and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry. 688 (1–2): 49–55. doi:10.1016/j.jorganchem.2003.08.028.

[1] "Standard Atomic Weights: Dysprosium". CIAAW. 2001.

[CIAAW2021-2] Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.

[Cloke1993-3] Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017. and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry. 688 (1–2): 49–55. doi:10.1016/j.jorganchem.2003.08.028.

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