Respuesta :
Na-23 probably means it has 23 neutrons. Na is on the 11th spot of the periodic table, so it probably has 11 protons and 10 electrons since it is +1
It has 11 protons because sodium's atomic number is 11, it has 10 electrons because a neutral sodium atom has 11 but this one is missing one so it has a charge of +1, and it has 12 neutrons because the atomic mass is number of neutrons plus the number of protons so 23-11=12.