# A neutral atom of sodium has 11 protons. How do you use this information to explain the total number of electrons that are in a sodium atom?

If there are $11$ positive particles..........
Note that the use of the terms, $\text{positive}$ and $\text{negative}$, are entirely arbitrary. The designation of $+$ and $-$ just means that the proton and the electron HAVE OPPOSITE electric charge. I can remember back in quantum chemistry getting the right magnitude on an answer, but the wrong sign, simply because I counted a wrong number of electrons. Had the electrons been originally designated a positive charge, I would not have had this problem.