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mass number 【物、化】(原子)質量數。

mass outbreak

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 如果把原子核內每顆核粒子的平均結合能(又稱比結合能)與質量數(原子核中的質子和中子的總數)繪制成圖(右下圖) ,便可發現圖中曲線在質量數大約等于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 如果把原子核內每顆核粒子的平均結合能又稱比結合能與質量數原子核中的質子和中子的總數繪制成圖右下圖,便可發現圖中曲線在質量數大約等于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。

Where a is the mass number equal to the numbers of protons plus the number of neutrons in the nucleus , z is the atomic number equal to the number of protons in the nucleus , x is the chemical symbol of the atom 表示, a是質量數,是原子核內的質子及中子數目總和。 z是原子序數,等于質子的數目。 x是原子的化學符號。

Binding energy per nucleon as a function of mass number total number of protons and neutrons 原子核的比結合能與質量數質子和中子總數的關系圖