or
or
What is the minimum percentage of Uranium-235 enrichment required to produce military-grade nuclear warheads?
What is the minimum percentage of Uranium-235 enrichment required to produce military-grade nuclear warheads?
✅ Correct Answer: 90%
Uranium-235 (U-235) is the fissile isotope used in nuclear weapons and some nuclear reactors.
To produce a military-grade nuclear warhead, the uranium must be highly enriched, typically to:
90% or more U-235, known as weapons-grade uranium.
| Enrichment Level | Description | Usage |
|---|---|---|
| < 20% | Low-enriched uranium (LEU) | Power reactors |
| ~60% | High-enriched uranium (HEU) | Research reactors (sometimes) |
| ≥ 90% | Weapons-grade uranium | Nuclear warheads |
So, the minimum enrichment required for military-grade nuclear weapons is 90% U-235.
👉 Correct option: 90% ✅
