The energy released if hydrogen atoms are combined to form ^ 4 _ 2 He is __________ MeV. (Take binding energies per nucleon of ^ 2 _ 1 H and ^ 4 _ 2 He as 1.1 MeV and 7.2 MeV, respectively)

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Correct answer: B. 24.4

The fusion reaction is given by: 2 ^ 2 _ 1 H arrow ^ 4 _ 2 He Binding energy of one ^ 2 _ 1 H nucleus = 2 × 1.1 = 2.2 MeV Total initial binding energy = 2 × 2.2 = 4.4 MeV Binding energy of ^ 4 _ 2 He nucleus = 4 × 7.2 = 28.8 MeV Energy released Δ E = Final binding energy - Initial binding energy Δ E = 28.8 - 4.4 = 24.4 MeV Answer: 24.4

The energy released if hydrogen atoms are combined to form ^ 4 _ 2...

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