Electron Arrangement

• Electrons in an atom travel around the nucleus in different energy levels
• The first energy level can hold 2 electrons
• The second and third energy levels can hold 8 electrons each
• Elements in the periodic table are arranged in order of increasing atomic numbers
• Elements are placed in groups according to how Manu electrons ae in the outer most energy level
• Elements in a group have similar chemical properties because they have the same number of outer electrons
• Electron Structure