Calculate the eccentricty for each ellipse below using a ruler (handheld or the electronic version). Once you have your values, match them to the correct ellipse. Use the equation e=f/d, you can refer to your note guide to help you. (earth systems)

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

Ithink its c hope it : )