Radiodating is the use of radioactive elements to roughly determine the age of a layer of sediment. The amount of radioactive element remaining is compared to its 'daughter element', the element that it becomes after radioactivity ceases. Which of the following pairs of radioactive: daughter elements is correctly paired?
A) Thorium ? Radium
B) Uranium ? Lead
C) Potassium ? Helium
D) Francium ? Argon
E) Rubidium ? Lead
Correct Answer:
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