Q.

Radioactive disintegration of uranium ultimately results in formation of –

A. radium
B. thorium
C. polonium
D. lead
Answer» D. lead
Explanation: Uranium-lead (U-Pb) dating is one of the oldest and most refined of the radiometric dating schemes, with a routine age range of about 1 million years to over 4.5 billion years, and with routine precisions in the 0.1-1 percent range.
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