Physics

Problem

For

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

the atomic mass (including 3 electrons) is

7.016004\,\text{u}

. Using

m_p = 1.007276\,\text{u},\; m_n = 1.008665\,\text{u},\; m_e = 0.000549\,\text{u}

, find its mass defect

\Delta m

\text{u}

. a)

0.0438\,\text{u}

0.0405\,\text{u}

0.0421\,\text{u}

0.0389\,\text{u}