Question

If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is (Mass of the helium nucleus is 4.0026 amu and mass of oxygen nucleus is 15.9994 amu)
A. (a) 7.6 MeV
B. (b) 56.12 MeV
C. (c) 10.24 MeV
D. (d) 23.4 MeV

Answer 1

Correct Answer - C
`4(`_2He^4)=`_8O^16`
Mass defect, `Deltam={4(4.0026)-15.9994}`
`=0.011` amu
`:.` Energy released per oxygen nuclei
`=(0.011)(931.48)MeV`
`=10.24` MeV
`:.` Correct answer is (c).