These elements are hard refractory metals. Titanium's mechanical properties make it useful in alloys. All isotopes of rutherfordium are radioactive, and have been synthesized in the laboratory, none of them have been found occurring in nature.
|>Explanation of right-hand periodic table slice:||Transition metals||atomic number in black are solids|
|solid borders are older than the Earth (Primordial elements)||dotted borders are made artificially (Synthetic elements)|