u

U is the chemical symbol for uranium, a heavy, silvery‑gray metallic element with atomic number 92. It is radioactive, naturally occurring in the earth’s crust, and is primarily used as fuel in nuclear reactors and weapons. Uranium’s most common isotopes are U‑238 (about 99.3 % of natural uranium) and U‑235 (about 0.7 %), the latter being fissile and essential for sustaining nuclear chain reactions. Views Nigeria