ഫലകം:Infobox uranium

Uranium, ₉₂U
Uranium
Pronunciation	/jʊəˈreɪniəm/ (ewr-AY-nee-əm)
Appearance	silvery gray metallic; corrodes to a spalling black oxide coat in air
Standard atomic weight Ar°(U)
	ഫലകം:Infobox element/standard atomic weight format
Uranium in the periodic table
	protactinium ← uranium → neptunium
Atomic number (Z)	92
Group	f-block groups (no number)
Period	period 7
Block	f-block
Electron configuration	[Rn] 5f3 6d1 7s2
Electrons per shell	2, 8, 18, 32, 21, 9, 2
Physical properties
Phase at STP	solid
Melting point	1405.3 K (1132.2 °C, 2070 °F)
Boiling point	4404 K (4131 °C, 7468 °F)
Density when liquid (at m.p.)	17.3 g/cm3
Heat of fusion	9.14 kJ/mol
Heat of vaporization	417.1 kJ/mol
Molar heat capacity	27.665 J/(mol·K)
Atomic properties
Oxidation states	+1, +2, +3, +4, +5, +6 (a weakly basic oxide)
Electronegativity	Pauling scale: 1.38
Ionization energies	1st: 597.6 kJ/mol ; 2nd: 1420 kJ/mol ; ;
Atomic radius	empirical: 156 pm
Covalent radius	196±7 pm
Van der Waals radius	186 pm
	Spectral lines of uranium
Other properties
Natural occurrence	primordial
Crystal structure	orthorhombic
Lattice constants	a = 285.35 pm; b = 586.97 pm; c = 495.52 pm (at 20 °C)
Speed of sound thin rod	3155 m/s (at 20 °C)
Thermal conductivity	27.5 W/(m⋅K)
Electrical resistivity	0.280 µΩ⋅m (at 0 °C)
Magnetic ordering	paramagnetic
Young's modulus	208 GPa
Shear modulus	111 GPa
Bulk modulus	100 GPa
Poisson ratio	0.23
Vickers hardness	1960–2500 MPa
Brinell hardness	2350–3850 MPa
CAS Number	7440-61-1
History
Naming	after planet Uranus, itself named after Greek god of the sky Uranus
Discovery	Martin Heinrich Klaproth (1789)
First isolation	Eugène-Melchior Péligot (1841)
Isotopes of uranium ക; തി;
	ഫലകം:Infobox element isotopes
	വർഗ്ഗം: Uranium; view; talk; edit; \| references

U · Uranium
	^iso U E infobox E isobox	→ H ibox H
[[:Category:\|cat:U]] (0) cat:U-isotopes (0) Commons Wikidata: Wiktionary
indexes by PT (page) ക തി

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Notes

↑ The thermal expansion is anisotropic: the coefficients for each crystal axis (at 20 °C) are α_a = 25.27×10⁻⁶/K, α_b = 0.76×10⁻⁶/K, α_c = 20.35×10⁻⁶/K, and α_average = α_volume/3 = 15.46×10⁻⁶/K.

References

↑ Morss, L.R.; Edelstein, N.M.; Fuger, J., eds. (2006). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. ISBN 9048131464.
↑ ^2.0 ^2.1 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.

ഫലകം:വിവരണം/ഭാഗം

[3] The thermal expansion is anisotropic: the coefficients for each crystal axis (at 20 °C) are α_a = 25.27×10⁻⁶/K, α_b = 0.76×10⁻⁶/K, α_c = 20.35×10⁻⁶/K, and α_average = α_volume/3 = 15.46×10⁻⁶/K.

[1] Morss, L.R.; Edelstein, N.M.; Fuger, J., eds. (2006). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. ISBN 9048131464.

[Arblaster_2018-2] 2.0 ^2.1 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.

[1]

[2]