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The atomic mass of . 16 O . is 15.995 15.995 amu while the individual masses of proton and neutron are 1.0073 1.0073 amu and 1.0087 1.0087 amu respectively. The mass of electron is 0.000548 0.000548 amu. Calculate the binding energy of the oxygen nucleus. Select the correct answer from above options

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Correct Answer - 12.38 × 10 − 13 J 12.38 . 8 O 16 . contains 8 protons, 8 electrons, and 16 − 8 = 8 16 neutrons. Mass defect = Δ m = [ Z n H + ( A − Z ) m n ] − M = Δ m = [ 8 × 1.0073 + 8 × 1.0087 ] − 15.595 Δ = [ 8.0584 + 8.0696 ] − 15.995 = = 16.128 − 15.995 = 0.133 a m u 0.133 Total binding energy = 0.133 × 931.5 M e V = = 123.8895 M e V = Binding energy per nucleon = 123.8895 16 = = 7.743 M e V = = 7.743 × 10 6 e V = ltbr. = 7.743 × 10 6 × 1.6 × 10 − 19 J = = 12.38 × 10 − 13 J =

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