In plasmapy.particles, objects based on the term "integer charge" have been deprecated in favor of objects named after the term "charge number". The ~plasmapy.particles.particle_class.Particle.integer_charge attribute of ~plasmapy.particles.particle_class.Particle has been deprecated in favor of ~plasmapy.particles.particle_class.Particle.charge_number. The ~plasmapy.particles.ionization_state.IonicFraction.integer_charge attribute of ~plasmapy.particles.ionization_state.IonicFraction has been deprecated in favor of ~plasmapy.particles.ionization_state.IonicFraction.charge_number. The ~plasmapy.particles.ionization_state.IonizationState.integer_charges attribute of ~plasmapy.particles.ionization_state.IonizationState has been deprecated in favor of ~plasmapy.particles.ionization_state.IonizationState.charge_numbers.