For the proposed decay answer the following:

PHYSICS · Multi-part · A Level · Physics · Particles and radiation · Particles and radiation

Problem

For the proposed decay 919F→ 819O+e++νe^{19}_{9}\text{F}\rightarrow\,^{19}_{8}\text{O}+e^++\nu_e answer the following: (a) State the initial and final values of the nucleon number. (b) State the initial and final values of the electric charge. (c) State the initial and final values of the total lepton number. (d) Based on your answers, indicate whether the decay is allowed or forbidden.

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