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BASIC INFO

CHEMICAL PROPERTIES

SYMBOL: Ra

ATOMIC NUMBER: 88

GROUP: Alkaline Earth Metals (Group 2)>

APPEARANCE: Silvery-White, Turns white when exposed to air due to formation of Radium nitride (Ra₃N₂).

STATE AT 25°C: Solid; Radium does not change states under normal conditions.

COLOR: Silvery-White

TEXTURE: Soft Metal

MELTING POINT(MP): About 700 °C

BOILING POINT(BP): About 1,100–1,700 °C

DENSITY: 5.5 g/cm³

UNIQUE PROPERTIES: Radium is a very reactive metal, readily combines with nonmetals, When exposed to air, radium turns black from radium nitride, Radium is the heaviest known alkaline earth metal.