Radium (Ra) is a chemical element belonging to the category Alkaline earth metal, with atomic number 88 and atomic mass 226.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Stays within its layerAstronomy
Neighbourhood in the graph
Above, what contains it; below, what it contains; on the right, what links it to another layer.
Radium is a chemical element with symbol Ra and atomic number 88.
It belongs to the alkaline earth metals and occupies group 2 and period 7.
Its standard atomic mass is 226.0000 u.