# What are some examples of net charges?

Another example are simple alkoxides and alcohols. Take the simplest alcohol, methanol, ${H}_{3} C O H$, versus its alkoxide salt, sodium methoxide, ${H}_{3} C {O}^{-} N {a}^{+}$.
Around sodium ($Z = 11$) there are 10 electrons, so it bears a positive charge, but what about the oxygen? Oxygen has atomic number of 8; there are 2 inner core electrons. Around oxygen there are 3 lone pairs PLUS the oxygen atom has a share of 1 electron from the $C - O$ bond. So the oxygen atom has 6 + 2 + 1 = 9 electrons. This is 1 negative charge in excess of the 8 positive charges in the oxygen nucleus. Oxygen (here) properly has a negative charge.