Cerium is the most abundant rare-earth elemen...
Chlorine is the culprit in the 'case of the e...
Chromium is a transition metal that gives col...
Famous as the colour of blue glass and import...
Copper is a soft metal that is an essential e...
There are only two chemical elements on the p...
Dysprosium earned its name by being very hard...
Erbium is named after a chemically famous Swe...