Answer:
110
Explanation:
The net charge of the compound is the sum of the net charges due to the electrons and the protons:
[tex]Q=N_p q_p + N_e q_e[/tex]
where
Np is the number of protons
Ne = 50 is the number of electrons
[tex]N_p = +1.6\cdot 10^{-19} C[/tex] is the charge of each proton
[tex]N_e = -1.6\cdot 10^{-19} C[/tex] is the charge of each electron
[tex]Q=+9.6\cdot 10^{-18} C[/tex] is the net charge of the compound
Solving the equation for Np, we find the number of protons:
[tex]N_p = \frac{Q-N_e q_e}{q_p}=\frac{+9.6\cdot 10^{-18}C-(50)(-1.6\cdot 10^{-19}C)}{+1.6\cdot 10^{-19} C}=110[/tex]
