Search Result：atomic number 72
atomic number 72 
(TTS Sound)
(TTS Sound)Overview of noun atomic_number_72
The noun atomic number 72 has 1 sense
- hafnium, Hf, atomic number 72 -- (a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons)