= -2∆𝐸 + 𝑅𝑇 𝑙𝑛 = 8.86 × 10 kJ/mol (44) VG is the molar volume of four protons, and VS is the molar volume of a He nucleus. 𝑉 = = 1.01 × 10 L/mol, where mp is the proton molar mass, 1.01 g/mol; ρp is the density of nucleus, 2.5×10 17 g/L. Assuming that the volume of an H atom (rH = 53 pm) is the volume occupied by a proton, the four protons have an equal molar volume. 𝑉 = = 3.7535 × 10 L/mol. The system potential is negligible because of the small quantity of proton mass. Eq. 44 gives the exothermic heat of 8.86×10 8 kJ/mol (~9.18 MeV per He ). It is comparable to the data reported by Wikipedia. Now, the concept of charge is eliminated from mechanics. Electricity describes the interaction attributes between fundamental particles, e.g., electrons. In the past decades, the rotational attribute of the attractive force might have been mistakenly regarded as the repulsive force because an electron looks like it is trying to avoid another electron. Hence, electricity might be an unnecessary concept.