PhysicsEasy183×since 2002Q6055The mass of proton, neutron and helium nucleus are respectively 1.0073 u,1.0087 u1.0073~u,1.0087~u1.0073 u,1.0087 u and 4.0015 u4.0015~u4.0015 u. The binding energy of helium nucleus is :A28.4 MeV28.4~\mathrm{MeV}28.4 MeVB56.8 MeV56.8~\mathrm{MeV}56.8 MeVC7.1 MeV7.1~\mathrm{MeV}7.1 MeVD14.2 MeV14.2~\mathrm{MeV}14.2 MeVCheck answerSkip