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Question

Find the energy liberated in the reaction: 223Ra209Pb+14C
The atomic masses needed are as follows:
223Ra223.018u 209Pb208.981u 14C14.003u


A

31.654 MeV

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B

32.654 MeV

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C

30.054 MeV

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D

None of these

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Solution

The correct option is A

31.654 MeV


Here, Δm=223.018208.98114.003=0.034 u
Hence, binding energy =0.034×931=31.654 MeV


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