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. For full isotope data, see NNDC NuDat 3.