92 U Uranium 238,03 u

Uranium

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Período
7
Grupo
—
Bloco
f-bloco
Fase (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.

About Uranium

Investigation of uranium salts led to the recognition of radioactivity itself, and the element remains the foundation of civil nuclear power. Uranium carries atomic number 92 and a relative atomic mass of 238.03, the highest of any element found in quantity in nature. Its configuration [Rn] 5f3 6d1 7s2 places it in the f-block of period 7, and its Pauling electronegativity is 1.38. The metal is dense and solid at standard temperature and pressure. Its principal application is as reactor fuel, where fission of the lighter isotope releases the energy that drives commercial nuclear generation. Chemically, uranium is a reactive actinide whose oxide chemistry governs both how the ore is processed and how spent fuel behaves in storage.

Propriedades físicas

Massa atômica 238.03 u
Fase em STP Solid

Propriedades eletrônicas

Eletronegatividade 1.38

Configuração eletrônica

Configuração [Rn] 5f³ 6d¹ 7s²

Electron Shell Configuration

Uranium electron shell configuration U 2e⁻ 8e⁻ 18e⁻ 32e⁻ 21e⁻ 9e⁻ 2e⁻
Electron shell structure of Uranium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 21
6 (P) 9
7 (Q) 2

Position in Periodic Table

Uranium position in the periodic table U

Bloco e período

Bloco

s p d f

Período

1 2 3 4 5 6 7

Tabela Periódica

Lantanídeos Actinídeos

Reações envolvendo 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

Mais Actinídeo

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 actinídeo.
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.