Which element of group 2 is used in treatment of cancer?
Which element of group 2 is used in treatment of cancer?
A. Magnesium
B. Radium
C. Strontium
D. Beryllium
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Which element of group 2 is used in treatment of cancer?
A. Magnesium
B. Radium
C. Strontium
D. Beryllium