From Which Mineral is Radium Obtained?
Answer: (4) Pitchblende
Radium obtained from Pitchblende Mineral. It was discovered by the Pierre Curie Marie in 1898. It is the heaviest known as alkaline earth metal.
Atomic number 88
Atomic weight 226
Boiling point 1737oC
Density 5.5 g/cm3
It is used in production of tooth paste, hair creams and even food items due to its supposed curative powers.