Respuesta :

Nitrogen 14 and Nitrogen 15 differ because: 
Nitrogen 14: 7 neurons and 7 protons 
Nitrogen 15: 8 neurons and 7 protons
 Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons;
 nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons.
hope that helps