92 U Uranium 238.03 u

Uranium

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Period
7
Group
—
Block
f-block
Phase (STP)
Solid

Uranium is a heavy, radioactive metal used as fuel in nuclear reactors. It was the element that led to the discovery of radioactivity.

Physical Properties

Atomic Mass 238.03 u
Phase at STP Solid

Electronic Properties

Electronegativity 1.38

Electron Configuration

Configuration [Rn] 5f³ 6d¹ 7s²

Electron Shell Configuration

Uranium electron shell configuration U 2e⁻ 8e⁻ 18e⁻ 32e⁻ 21e⁻ 9e⁻ 2e⁻

Position in Periodic Table

Uranium position in the periodic table U

Block & Period

Block

s p d f

Period

1 2 3 4 5 6 7

Periodic Table

Lanthanides Actinides

Reactions Involving U

Uranium-235 Fission

²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + 3¹n

Nuclear

Alpha Decay of Uranium-238

²³⁸U → ²³⁴Th + ⁴He

Nuclear

Neutron Capture by Uranium-238

²³⁸U + ¹n → ²³⁹U → ²³⁹Np → ²³⁹Pu

Nuclear

Compounds Containing Uranium

Uranium Dioxide

UO₂

More Actinide

89 Ac Actinium 90 Th Thorium 91 Pa Protactinium 93 Np Neptunium 94 Pu Plutonium 95 Am Americium 96 Cm Curium 97 Bk Berkelium 98 Cf Californium 99 Es Einsteinium

Frequently Asked Questions

What is Uranium?
Uranium (U) is a chemical element with atomic number 92. It is a solid at standard temperature and pressure, classified as a actinide.
What are the key properties of Uranium?
Uranium has an atomic mass of 238.03 u.
What is the electron configuration of Uranium?
The electron configuration of Uranium is [Rn] 5f3 6d1 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Uranium?
Uranium has an electronegativity of 1.38 on the Pauling scale.