Q.

Nucleus A having Z = 17 and equal number of protons and neutrons has 1.2 MeV binding energy per nucleon. Another nucleus B of Z=12 has total 26 nucleons and 1.8 MeV binding energy per nucleons. The difference of binding energy of B and A will be ___ MeV. 

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a

14MeV

b

6MeV

c

12MeV

d

28MeV

answer is A.

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Detailed Solution

Binding energy of  A=1.7×2×1.2
 =40.8MeV
Binding energy of  B=26×1.8
 =46.8MeV
Difference =46.840.8 =6MeV
 

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Nucleus A having Z = 17 and equal number of protons and neutrons has 1.2 MeV binding energy per nucleon. Another nucleus B of Z=12 has total 26 nucleons and 1.8 MeV binding energy per nucleons. The difference of binding energy of B and A will be ___ MeV.