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If a star can convert all He nuclei completely into oxygen nuclei . The energy released per oxygen nuclei is . [Mass of nucleus He is 4.0026 amu & mass of oxygen nucleus is 15.9994]

$(a)\;11.26 MeV\qquad(b)\;10.24 MeV\qquad(c)\;9.2 MeV\qquad(d)\;8.3 MeV$

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Answer : (b) $\;10.24 MeV$
Explanation :
Since $\;4(_{2}He^{4})=_{8}O^{16}$
So mass defect is
$\bigtriangleup m={4(4.0026)-15.994} amu=0.011amu$
Energy released per oxygen nuclei
$=10.24 MeV\;.$
answered Feb 27, 2014 by yamini.v

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