1. Quantum Theory/Numbers Week 5/6 Big idea #1

2. 1) How do we know when an electron has moved from an excited state to the ground state? The electron will 1.Release a photon. 2.Release a specific amount of energy. 3.Release a specific color. 4.Release a quantum of energy. 5.All of the above are correct.

3. 2) What does the second quantum number ( l ) describe? 1.Orbital shape (sublevel). 2.Energy level. 3.Electron spin. 4.Orbital orientation.

4. 3) Which quantum number has values of +½ or –½? 1.Orbital shape. 2.Energy level. 3.Electron spin. 4.Orbital orientation.

5. 4) Which of the following is not a possible orbital shape? 1.s 2.p 3.z 4.f

6. 5) What is currently the highest possible principal quantum number an electron can have? 1.No limit 2.5 3.6 4.7

7. 6) Which of the following explains why the first orbital notation is correct but the second one is incorrect? ↑↓ ↑↓ ↑ ↑ ↑ ↑↓ ↑↓ ↑↓ ↑ ↑↓ 1s 2s 2p 1s 2s 2p 1.Aufbau principle 2.Hund’s rule 3.Pauli exclusion 4.Law of one for all and all for one 1234567891011121314151617181920 21222324252627282930313233

8. 7) What is the quantum number of the red electron? ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 1s 2s 2p 3s 3p 4s 3d 1. 3 1 -1 + ½ 2. 3 2 -1 +½ 3. 3 3 2 +½ 4. 3 0 0 + ½

9. 8) What is the 2 nd quantum number for the red electron? ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 1s 2s 2p 3s 3p 4s 3d 1. 0 2. 1 3. 2 4. – ½