Last modified on 26 September 2018, at 13:04

Actinium

Actinium
Properties
Atomic symbol Ac
Atomic number 89
Classification Transition Metal
Atomic mass 227.0 amu
Other Information
Date of discovery 1899
Name of discoverer André-Louis Debierne
Name origin From the Greek aktinos.
Uses Unknown
Obtained from From Radium, by neutron irradiation.

Actinium is a very rare radioactive chemical element. It is silvery-white and glows blue in the dark.[1]

References

  1. Encylopaedia Britannica online, Actinium