72 Hf 178.49

Hafnium

Category: Transition metal | State: Solid

Atomic Properties

Atomic Number 72
Atomic Mass 178.49
Electronic Configuration [Xe] 4f¹⁴ 5d² 6s²

Periodic Table Placement

Group 4
Period 6
Block d-block

Physical Properties & Discovery

Melting Point 2233°C
Boiling Point 4603°C
Density 13.31 g/cm³
Discovered By Dirk Coster & George de Hevesy (1923)

Frequently Asked Questions about Hafnium