Which of the following is the same as Radium, Polonium, Uranium ?

Correct answer: A. Thorium

  • A. Thorium
  • B. Caesium
  • C. Barium
  • D. Strontium

Explanation

Radium, polonium and uranium are radioactive chemical elements. Thorium is also naturally radioactive, whereas caesium, barium and strontium are not the matching general category here.

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