Genius! There are $$3$$ protons and $$4$$ electrons. So, the net charge will be $$\left(3 \times \left(+ \mathrm{C}\right) \right) + \left(4 \times \left(- \mathrm{C}\right) \right)$$ $$= 3 \, \mathrm{C} - 4 \, \mathrm{C} = -1 \, \mathrm{C}$$