92 U 238.028913

Uranium

ACTINIDE

Phase: Solid

Discovered: Martin Heinrich Klaproth

Block: F

Summary

Uranium is a chemical element with symbol U and atomic number 92. It is a silvery-white metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.

Source: Wikipedia

Physical Properties

Atomic Mass 238.028913 u

Density 19.1 g/cm³

Melting Point 1405.3 K

Boiling Point 4404 K

Molar Heat 27.665 J/(mol·K)

Electron Affinity 50.94 kJ/mol

Ionization Energies

1^st: 597.6 kJ/mol

2^nd: 1420 kJ/mol