What physical properties does radium have

Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile..

the dissolution of polymer can be thermodynamically described in 2 steps.

i think its 5049.

i hope this !