alleryEnergy released in fusion: 4 protons → He-4 + 2 e⁺ + 2 ν_e (solar fusion). About:
A1 keV
BAbout 26.7 MeV per He-4 formed
C13.6 eV
D100 GeV
Answer & Solution
Correct answer: B. About 26.7 MeV per He-4 formed
4 ¹H → ⁴He releases ~26.7 MeV (mass defect × c²).
Proton-proton chain in Sun's core.
Produces 99% of Sun's energy.
Most goes into γ rays + neutrinos.
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