'Aktis, Greek for "ray", gave us actinium; radius, Latin for "ray", gave us this'
Radium/radon
ELEMENT NAMES: Aktis, Greek for ray, gave us actinium; radius, Latin for ray, gave us this
Aktis, Greek for "ray", gave us actinium; radius, Latin for "ray", gave us this
Aktis, Greek for "ray", gave us actinium; radius, Latin for "ray", gave us this
ELEMENT NAMES
Radium/radon
ELEMENT NAMES