کينډۍ:Infobox uranium

Uranium,  ₉₂U

Two hands in brown gloves holding a blotched gray disk with a number 2068 hand-written on it
عمومي خواص
Pronunciation	/jʊˈreɪniəm/ ew-RAY-nee-əm
Appearance	silvery gray metallic; corrodes to a spalling black oxide coat in air
Uranium په دوراني جدول کې
Nd ↑ U ↓ (Uqh) protactinium ← uranium → neptunium ‍
اټومي شمیره (Z)	92
گروپ, پیریود	group n/a, period 7
بلاک	f-block
Element category	actinide
معياري اټومي وزن (Ar)	کينډۍ:Val
Electron configuration	[Rn] 5f3 6d1 7s2
Electrons per shell	2, 8, 18, 32, 21, 9, 2
فزیکي خواص
حالت (at STP)	جامد
دويلې کيدو ټکى	1405.3 K ​(1132.2 °C, ​2070 °F)
يشنا ټکی	4404 K ​(4131 °C, ​7468 °F)
Density near r.t.	19.1 g/cm3
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)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 2325 2564 2859 3234 3727 4402
اټومي خواص
Oxidation states	6, 5, 4, 3, 2, 1 ​(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
Miscellanea
Crystal structure	​orthorhombic Orthorhombic crystal structure for uranium
Speed of sound thin rod	3155 m/s (at 20 °C)
Thermal expansion	13.9 µm/(m·K) (at 25 °C)
د تودوخې تېرېدنه	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)
Main isotopes of uranium
آيسو­ټوپ Abun­dance نیم ژوند (t1/2) Decay mode Pro­duct

Element navigation

PTuraniumPT

Pa ←

iso 92U ibox    wd:Q1098

→ Np

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