The atomic mass of a neutral atom is

PHYSICS · Subjective · A Level · Physics · Nuclear physics · Nuclear physics

Problem

The atomic mass of a neutral

^{7}_{3}\text{Li}

atom is

7.016003\,\text{u}

. The masses of a proton, neutron and electron are

1.007276\,\text{u}

1.008665\,\text{u}

and

0.0005486\,\text{u}

respectively. Calculate the mass defect

\Delta m

of the

^{7}_{3}\text{Li}

nucleus in atomic mass units (u), correct to three significant figures.