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The mass of a .(3)^(7) Li nucleus is 0.0...

The mass of a `._(3)^(7) Li` nucleus is `0.042 u` less than the sum of the masses of all its nucleons. The binding energy per nucleon of `._(3)^(7)Li` nucleus is nearly

A

23MeV

B

46 MeV

C

5.6 MeV

D

3.9 MeV

Text Solution

Verified by Experts

The correct Answer is:
C
`E_(bn)= (Delta m xx 931.5)/(7) MeV [("As energy equivalence of"),(1U= 931.5 MeV)]`
`=(0.042 xx 931.5)/(7) MeV`
= 5.589 `~~ 5.6MeV`
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