Hafnium (Hf)

Atomic Number: 72

Relative Atomic Mass: 178.49

Electronegativity: 1.30

Atomic Radius (Picometers): 155

Appearance: Steel-Grey

Occurrence: Natural

Melting Point (Kelvin): 2506

Boiling Point (Kelvin): 4876

Stable Isotopes: 176, 177, 178, 179, 180

Discoverers: Georges Urbain and Vladimir Vernadsky in 1911

Properties: Ductile

First Use: Unknown

Modern Uses: Control Rods, Microprocessors

Picture Courtesy of Alchemist-hp

©2011 Grant Dwyer