Citizendium - a community developing a quality, comprehensive compendium of knowledge, online and free.
Click here to join and contribute
CZ thanks our previous donors. Donate here. Treasurer's Financial Report


From Citizendium
Jump to: navigation, search
This article is a stub and thus not approved.
Main Article
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
Properties [?]
This editable Main Article is under development and subject to a disclaimer.

1s22s22p63s23p63d104s24p6 4d105s25p64f145d106s26p67s2
[ ? ] Alkaline Earth Metal:
Highly radioactive

Radium is a chemical element, having the chemical symbol Ra. Its atomic number (the number of protons) is 88. It has a standard atomic weight of 226 g•mol −1 and it is a solid in its elemental form.

Radium is considered a member of the "Alkali earth metal" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 1,737 °C and a melting point of 700 °C.