Yes. Uranium is a metal, classified as an actinide on the periodic table.

How many protons does uranium have?

Uranium has 92 protons. Its atomic number is 92, which is also the number of electrons in a neutral atom of uranium.

What group and period is uranium in?

Uranium is in period 7 of the periodic table. As an actinide in the f-block, it sits in a separate row below the main table and has no standard group number.

What is the atomic mass of uranium?

The atomic mass of uranium is 238.03 u (unified atomic mass units).

Element 92

Uranium (U)

Actinide · Period 7 · f-block

Uranium (U) is element 92 of the periodic table, an actinide in period 7 (f-block) with an atomic mass of 238.03 and is a solid at standard conditions.

At a glance

Atomic number: 92
Symbol: U
Atomic mass: 238.03 u
Category: Actinides
Period: 7
Block: f-block
Phase at STP: solid

Electron structure

Electron configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f3 6d1 7s2
Shorthand configuration: [Rn] 5f3 6d1 7s2
Electrons per shell: 2, 8, 18, 32, 21, 9, 2
Oxidation states: +1, +2, +3, +4, +5, +6

Physical properties

Melting point: 1,405.3 K (1,132.15 °C)
Boiling point: 4,404 K (4,130.85 °C)
Density: 18.95 g/cm³
Phase: solid

Atomic properties

Electronegativity (Pauling): 1.38
Atomic radius: 156 pm
Covalent radius: 196 pm
Van der Waals radius: 186 pm
First ionization energy: 598 kJ/mol
Electron affinity: 51 kJ/mol

Notable isotopes

Notable isotopes of Uranium: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
U-238	238.05079	-	Half-life 4.47 billion years

Common uses

Nuclear power
Nuclear weapons
Medical isotopes
Dating rocks

Discovery

Year: 1789
Discovered by: Martin Heinrich Klaproth
Country: Germany

Frequently asked questions

Is uranium a metal?: Yes. Uranium is a metal, classified as an actinide on the periodic table.
How many protons does uranium have?: Uranium has 92 protons. Its atomic number is 92, which is also the number of electrons in a neutral atom of uranium.
What group and period is uranium in?: Uranium is in period 7 of the periodic table. As an actinide in the f-block, it sits in a separate row below the main table and has no standard group number.
What is the atomic mass of uranium?: The atomic mass of uranium is 238.03 u (unified atomic mass units).

Keep exploring

Uranium's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.