Hafnium

=hafnium=


 * Name:** Hafnium


 * Symbol:** Hf


 * Atomic Number:** 72


 * Melting Point:** 2150.0 °C (2423.15 K, 3902.0 °F)


 * Boiling Point:** 5400.0 °C (5673.15 K, 9752.0 °F)


 * Number of Protons/Electrons:** 72


 * Number of Neutrons:** 106


 * Crystal Structure:** Hexagonal


 * Color:** Silver

by dmitri mendeleev