Chemical reactions

Flame color

Gives a red flame when burned [3].

Reaction of radium with air

Radium blackens when exposed to air. The reaction is believed to be the formation of the nitride [3]

3 Ra(s) + N2(g) Ra3N2(s)

Reaction of radium with water

Radium decomposes in water. The reaction is less volatile than the corresponding reaction for barium [3]

Ra(s) + 2 H2O(l) Ra(OH)2(aq) + H2(g).