Some of radium-226's decay products received historical names including "radium", ranging from radium A to radium G, with the letter indicating approximately how far they were down the chain from their parent 226Ra.
Disa nga produktet e zbulimit radium-226 morën emra historikë duke përfshirë "radiumin", duke filluar me radiumin A në radiumin G, me shkronjën që tregonte afërsinë e zinxhirit nën prindin e tyre 226Ra.