U - Uranium - periodic table of the elements

Uranium oxide has been used since ancient times for coloring of glass. The element was discovered in 1789 by a German chemist, Martin Klaproth, who named it for the newly observed seventh planet. In 1841, Frenchman Eugene Peligot extracted uranium metal, which caused small interest until March 1, 1869, when French physicist, Henry Becquerel discovered radioactivity in uranium salts - suddenly uranium was popular.

Although only mildly radioactive, uranium compounds are toxic.

Atomic number	-	92		Density	g/mL	18	.9
Atomic weight	u	238	.029	Melting point	K	1405
Bonding radius	A	1	.42	Boiling point	K	4407
Atomic radius	A	-		Heat of vaporization	kJ/mol	477
Ionization Potential	V	6	.05	Heat of fusion	kJ/mol	8	.52
Electronegativity	-	1	.38	Specific heat	J/gK	0	.12
The oxide is amphoteric.				Crystal are orthorhombic.
Electron configuration: [Rn] 5f³ 6d¹ 7s²

Other elements of the periodic table

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La * Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac ** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr