April 2020
Intermediate to advanced
296 pages
5h 20m
English

Hf remained concealed for years ’midst zircon’s crystal cage,
’Til Copenhagen’s X-ray specs propelled it center stage.
Helps guard the gate on chips so small,
Its carbide barely melts at all!
In fissile cores on subs below, it quells hot neutrons’ rage.
aytch-eff
GROUP 4 TRANSITION METAL
Hafnium is a ductile, silvery metal that sits directly beneath zirconium in group 4 on the periodic table. It has a close chemical similarity to zirconium that allows it to reside seamlessly amidst the crystal lattices ...