1. An excited electron on a hydrogen atom releases a photon as it falls from ene

Question

1. An excited electron on a hydrogen atom releases a photon as it falls from energy level 6 to level 3. What is the wavelength of the photon released?

a. 2.74 x1016 s-1

b. 2.18 x10-16 J

c. 1090 nm

d. 109 nm

e. 3 m

2. Which of the following set of quantum numbers is possible?

a. n = 2, l = 0, ml = 1, ms = 1/2

b. n = 3, l = 3, ml = 2, ms = 1/2

c. n = 4, l = 3, ml = 3, ms = -1/2

d. n = 3, l = 3, ml = 2, ms = -1/2

e. n = 2, l = 1, ml = 2, ms = -1/2

3. Which of the following is a view of the px orbital from the y-axis?

e. None of the above

4. The 2s orbital of calcium is more stable than the 2p orbital even though the 2p orbital has its maximum electron density closer to the nucleus. The reason for this higher stability is:

a. calcium

Explanation / Answer

1. d

2. c

3. ___

4. b

5. d

6. d

7. b

8. a

9. a

10. e

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