[填空题]
How much energy would be required toy l9kbwt.xg sy1k,wyciu9j c9x:f(76 break a hrt,/lghfr+ (8osiwpu::k) in elium nucleus into its constituents, two protons and two neutrons? The rest masses of a proton r h, wn)8lfost+ig/p:u(r ki:(including an electron), a neutron, and helium are, respectively, 1.00783 u, 1.00867 u, and 4.00260 u. (This energy difference is called the total binding energy of the $^4\text{He}$ nucleus.) KE = MeV
