# What is the number of protons in an atom of carbon-12?

For all carbon, $Z , \text{the atomic number} = 6$.
And by definition, if $Z = 6$, there are are 6 protons, 6 massive, positively charged particles, in each carbon nucleus; this is what characterizes the element as carbon.
How many neutrons, massive, neutrally charged particles are there in a "^12C atom?