Radium (Ra)
![](../Images/spacer.gif)
![](../Images/otherelements.gif)
![](../Images/spacer.gif)
![](../Images/neutralatom.gif)
![](../Images/singlyionized.gif)
![Homepage - Introduction Homepage - Introduction](../Images/mainPage.jpg)
![Finding list Finding list](../Images/findinglist.gif)
![Select element by name. Select element by name.](../Images/element_name_G.gif)
![Select element by atomic number. Select element by atomic number.](../Images/atomic_number_G.gif)
![Select element from periodic table Select element from periodic table](../Images/periodic_table_G.gif)
![](../Images/spacer.gif)
![Radium Atomic Data Radium Atomic Data](../Images/general_Y.gif)
![Radium Strong Lines Radium Strong Lines](../Images/strong_Y.gif)
![Radium Neutral Atom Persistent Lines Radium Neutral Atom Persistent Lines](../Images/persistent_Y.gif)
![Radium Neutral Atom Energy Levels Radium Neutral Atom Energy Levels](../Images/energy_Y.gif)
![Radium Singly Ionized Persistent Lines Radium Singly Ionized Persistent Lines](../Images/persistent_O.gif)
![Radium Singly Ionized Energy Levels Radium Singly Ionized Energy Levels](../Images/energy_O.gif)
References and Notes for Radium ( Ra )
AWT80 J. A. Armstrong, J. J. Wynne, and F. S. Tomkins, J. Phys. B 13, L133 (1980).
M58 C. E. Moore, Atomic Energy Levels, Natl. Bur. Stand. (U.S.) Circ. 467. Vol. III (1958); reprinted as Natl. Stand. Ref. Data Ser., Natl. Bur. Stand. (U.S.) 35 (1971).
R34a E. Rasmussen, Z. Phys. 86, 24 (1934).
R34b E. Rasmussen, Z. Phys. 87, 607 (1934).