U

Uranium

Element 92 · 238.0289 u

Aktinie f-block Periode 7 Solied by RT Radioaktief t½ 4.468 billion years Dag lengte: →

Uranium is the primary fuel for nuclear power plants.

Fisiese eienskappe

Atomic Mass238.0289 u
Density19.1 g/cm³
Smelt punt:1405.3 K
Boiling Point4404.0 K
AppearanceSilvery-gray metallic
Toestand by kamerkompSolied

Chemical Properties

Electronegativity1.38 (TrinidadCity name (optional, probably does not need a translation))
1st Ionization Energy597.6 kJ/mol
Electron Affinity50.94 kJ/mol
Oxidation States+2, +3, +4, +5, +6

Atomic Properties

Electron Configuration[Rn] 5f3 6d1 7s2
Atomic Radius156.0 pm
Covalent Radius196.0 pm
Atomic radius:186.0 pm

Discovery

Discovered ByMartin Heinrich Klaproth
Discovery Year1789
LocationBerlin, Germany
Genoemde NaNamed after the planet Uranus

About Uranium

Uranium is a silvery-gray metallic element. Uranium-235 is the only naturally occurring fissile isotope. Uranium was used as a yellow glass colorant centuries before its radioactivity was discovered.

Gebruiks & Programme

Nuclear power, nuclear weapons, armor-piercing ammunition, radiation shielding, and glass colorant.

Fun Fact

Antique 'Vaseline glass' colored with uranium from the 1800s still glows green under UV light.

Isotopes

Definieer Molekulêr Gewigte Abundance Half-Life Stabiel
234 0.000054% 245,500 years Nee
235 0.007204% 703.8 million years Nee
238 0.992742% 4.468 billion years Nee

Electron Configuration

[Rn] 5f3 6d1 7s2

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Compare with other elements

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