The energy released if hydrogen atoms are combined to form is

Question

The energy released if hydrogen atoms are combined to form ${}_{2}^{4}{He}$ is ________.

(Take binding energies per nucleon of ${}_{1}^{2}H$ and ${}_{2}^{4}{He}$ as 1.1 MeV and 7.2 MeV, respectively.) [2026]

Smart Achievers · Accepted Answer

(2)

${}_{1}^{2}H + {}_{1}^{2}H ⇌ {}_{2}^{4}H e$

$Energy released Q = {(B E)}_{products} - {(B E)}_{reactants}$

$Q = 4 \times 7.2 - 4 \times 1.1 = 24.4 MeV$

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