The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the mass defect (in amu)of a ⁵⁷Ni nucleus? (The mass of a nickel-60 nucleus is 59.9308 amu.)

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Quizplus · Accepted Answer

The mass defect is the difference between the mass of the individual nucleons and the mass of the nucleus. For ⁵⁷Ni, the mass defect is:(57 x 1.00867 amu) + (32 x 1.00728 amu) - 59.9308 amu = 0.5155 amu

The Mass of a Proton Is 1