Question

The isotopic abundance of C-12 and C-14 is 98% and 236 respectively What would be the same
otope in 12 carbon sample
(A) 1032 10* (R) 30110 (C) S 10 (D) 602-10P​

Answer 1

Answer:

14 g of carbon 14 atom contains =6.023×1023atoms

1 g of carbon 14 atom contains =6.023×1023/14

12 g of carbon 14 atom contains =(6.023×1023×12)/14

=5.16×1023

Now its 2% is (5.16×1023×2)/100

=10.32×1021

So, the number of C−14 atoms in 12 g of carbon is 10.32×1021