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Periodic Table · element

Uranium

U · Z 92

atomic number
92
atomic mass
238.03
notation
U
group
f-block: Actinide
period
7
state0c
Solid
state20c
Solid
occurrence
Primordial
density
19.1
melting pt
1135
boiling pt
4131
discovered
1789
abundance
2.7
bio class
Not essential
bio role
No biological role. Chemically it is a heavy-metal kidney poison first and a radiological hazard second.
ore grade
2000
ore minerals
uraninite (pitchblende), coffinite, carnotite; sandstone-hosted roll fronts
mined as
Primary

extraction

About half now comes from in-situ leaching: oxygenated, mildly acid or alkaline solution is pumped through a sandstone orebody via wellfields and the uranium stripped out on ion-exchange resin, no mine required. Conventional ore is milled, acid-leached, solvent-extracted and precipitated as yellowcake (U₃O₈), then converted to UF₆, enriched in centrifuges, and made into fuel.

categories

#Metal#Actinide

mines

Olympic DamMponengCigar LakeMcArthur RiverInkaiRössingRanger

machines

Chicago Pile-1Pressurized Water Reactor

equations

Radioactive Decay LawHalf-LifeMass–Energy EquivalenceGraham's Law of Effusion

Referenced by

equation
Graham's Law of EffusionHalf-LifeMass–Energy EquivalenceRadioactive Decay Law
machine
Chicago Pile-1Pressurized Water Reactor
mine
Cigar LakeInkaiMcArthur RiverMponengOlympic DamRangerRössing

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From the All Periodical Elements database in Notion, last edited 2026-08-25. This page is the row, rendered by the build; nothing on it is written by hand.