The atomic mass of an oxygen-16 atom is

PHYSICS · Multi-part · CBSE · Physics · Nuclei · Nuclei

Problem

2.65602\times10^{-26}\,\text{kg}

. The isotope contains eight protons and eight neutrons. (i) Determine the mass of an oxygen-16 nucleus in kilograms. (Mass of an electron

=9.109\times10^{-31}\,\text{kg}

.) (ii) Using

m_{p}=1.6726\times10^{-27}\,\text{kg}

and

m_{n}=1.6749\times10^{-27}\,\text{kg}

, calculate the mass defect of the oxygen-16 nucleus in kilograms. (iii) Express the mass defect obtained in part (ii) (a) in atomic mass units (take

1\,u=1.6605\times10^{-27}\,\text{kg}

) and (b) in mega-electron-volts (take

c^{2}=9.00\times10^{16}\,\text{m}^{2}\,\text{s}^{-2}

and

1\,u=931.5\,\text{MeV}/c^{2}