Category: (transition metal)
Density at 25°C: solid: n/a
This is the first element in along the last row of the main part of the periodic table. Period 7 Group 4. The properties of all these elements are not well characterised and may be slightly disputed. The most stable isotope has a half life of about 1.3 hours.
Named after Ernest Rutherford, a New Zealand physicist. It was not named until 1997.