In other words , the same amount of energy will be given off when stand - alone nucleons come together to form the nucleus . when the binding energy per nucleon is plotted against the mass number , i . e . total number of protons and neutrons in a nucleus the bottom right figure , it is found that the curve peaks around the mass number 56 , i . e . the iron nucleus 如果把原子核內(nèi)每顆核粒子的平均結合能又稱比結合能與質量數(shù)原子核中的質子和中子的總數(shù)繪制成圖右下圖,便可發(fā)現(xiàn)圖中曲線在質量數(shù)大約等于56即鐵原子核時到達最高點,即是鐵原子核的總體能量最低。
In other words , the same amount of energy will be given off when stand - alone nucleons come together to form the nucleus . when the binding energy per nucleon is plotted against the mass number , i . e . total number of protons and neutrons in a nucleus ( the bottom right figure ) , it is found that the curve peaks around the mass number 56 , i . e . the iron nucleus 如果把原子核內(nèi)每顆核粒子的平均結合能(又稱比結合能)與質量數(shù)(原子核中的質子和中子的總數(shù))繪制成圖(右下圖) ,便可發(fā)現(xiàn)圖中曲線在質量數(shù)大約等于56 (即鐵原子核)時到達最高點,即是鐵原子核的總體能量最低。