1.

      Which of the following isotopes of carbon is/are used in carbon dating?        [CDS]

A. \[_{6}{{C}^{12}}\] only 
B.         \[_{6}{{C}^{13}}\] only
C. \[_{6}{{C}^{14}}\] only  
D.         \[_{6}{{C}^{12}}\] and \[_{6}{{C}^{14}}\]
Answer» D.         \[_{6}{{C}^{12}}\] and \[_{6}{{C}^{14}}\]


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