Atoms contain charged particles called protons and electrons. Each proton has a charge of +1, and each electron has a charge of –1. A sulfur ion has 16 protons and 18 electrons. Find the net charge.

Question

***[isuru]*** · Answer

hi,
       if a charge of a proton is +1 then charge of 16 protons r  +16
      if a charge of a electron is -1 then the charge of 18 electrons r -18

to find the net charge add those 2 values  in the following way...
            16 + (-18)

     Did ya get it ?