How many neutrons does sodium have?

There are 12 neutrons in a Sodium atom. To determine the number of neutrons in a specific element's atom, find the number of protons (its atomic number, which in this case is 11) and subtract it from the mass number (the number below the symbol in a periodic table rounded which in this case is 23).
Sodium23 has 12 neutrons.
there are 12 neutrons in a sodium atom