1. Electron Transition Can electrons move between energy levels? If so, how? How are transition and light related?

2. Which energy level is present? n = 2 n = 3

3. Electron Transition Electrons require energy to move between levels e- in 1 st orbital is held closer to nucleus and has lower energy (ground state) e- in 5 th orbital is further from nucleus and has high energy (excited state) e- CAN MOVE between shells by absorbing or releasing energy, called e- transition

4. Electron Transition ELECTRON TRANSITION occurs as: electron absorbs energy and moves away from nucleus - called excited state electron emits energy and moves towards nucleus - called ground state TURN TO BACK PAGE OF REF. TABLE