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General

• Element Identification Timeline

Relative atomic mass (261) Atomic mass (kg) 434x10-27 Density (g/cm3) unknown Physical State at STP solid Melting point (°C) unknown Boiling point (°C) unknown Crystal Structure of solid element unknown Radioactive isotope 265Rf Half life 13 hours

STP = standard temperature and pressure. Usually considered as room temperature and pressure.