The atomic number would be 11. since there are 13 neutrons and the mass number is 24, the number of protons must be 11. This is because the atomic mass (24) is the added amount of protons and neutrons in the atom.
Line 1: straight horizontal line Line 2: straight line at a slope Line 3: exponential growth curve Line 4: the topmost curve (the one that initially increases but then starts levels out)
