Plutonium, Pu
Plutonium, Pu Categories: Metal
Plutonium, Pu Categories: Metal
Radium, Ra Categories: Metal
Rubidium, Rb Categories: Metal
Rhenium, Re; Annealed Categories: Metal
Rhenium, Re; Deformed Categories: Metal
Rutherfordium, Rf Categories: Metal
Rhodium, Rh; Annealed Categories: Metal
Rhodium, Rh; As-Plated Categories: Metal
Rhodium, Rh; Hardened Categories: Metal
Ruthenium, Ru; Annealed Categories: Metal