For the atomic mass (including 3 electrons) is

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

For 37Li^{7}_{3}\text{Li} the atomic mass (including 3 electrons) is 7.016004 u7.016004\,\text{u}. Using mp=1.007276 u,  mn=1.008665 u,  me=0.000549 u m_p = 1.007276\,\text{u},\; m_n = 1.008665\,\text{u},\; m_e = 0.000549\,\text{u}, find its mass defect Δm\Delta m in u\text{u}. (a) 0.0438 u0.0438\,\text{u} (b) 0.0405 u0.0405\,\text{u} (c) 0.0421 u0.0421\,\text{u} (d) 0.0389 u0.0389\,\text{u}

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