Ra
Radium
Z = 88 · Alkaline Earth Metal · 226.0 u
Nuclear Engineering Significance
Naturally radioactive (Ra-226, t₁/₂ = 1,600 y) member of the U-238 decay chain. Historically important as the first isolated radioactive element. Relevant today mainly in uranium mining/milling waste (NORM) characterization and environmental radiation assessments.
Basic properties
- Atomic number (Z)
- 88
- Standard atomic mass
- 226.0 u
- Category
- Alkaline Earth Metal
Isotopes & cross-section data
No nuclide data for this element in the reference database.
The NRDP database focuses on nuclides relevant to reactor physics (fuels, moderators, structural materials, fission products, etc.). For full isotope data, see NNDC NuDat 3 or IAEA Nuclear Data Services.