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Chemistry: A Molecular Approach, 1 st Edition Nivaldo J. Tro The Quantum- Mechanical Model of the Atom Chapter 7.

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Presentation on theme: "Chemistry: A Molecular Approach, 1 st Edition Nivaldo J. Tro The Quantum- Mechanical Model of the Atom Chapter 7."— Presentation transcript:

1 Chemistry: A Molecular Approach, 1 st Edition Nivaldo J. Tro The Quantum- Mechanical Model of the Atom Chapter 7

2 Tro Chemistry: A Molecular Approach a)7.1 x 10 –11 b)7.1 x 10 –2 c)1.3 x d)1.4 x e)7.1 x 10 –18 Determine the wavelength (in nm) of an X-ray with a frequency of 4.2 x Hz.

3 Tro Chemistry: A Molecular Approach Determine the wavelength (in nm) of an X-ray with a frequency of 4.2 x Hz. a)7.1 x 10 –11 b)7.1 x 10 –2 c)1.3 x d)1.4 x e)7.1 x 10 –18

4 Tro Chemistry: A Molecular Approach A major league pitcher throws a g baseball at a speed of 92.5 mph (41.4 m/s). What is the de Broglie wavelength of the baseball in meters? a)4.81 x 10 –38 b)4.81 x 10 – 41 c)1.08 x 10 – 34 d)1.08 x 10 – 37 e)1.08 x 10 – 40

5 Tro Chemistry: A Molecular Approach A major league pitcher throws a g baseball at a speed of 92.5 mph (41.4 m/s). What is the de Broglie wavelength of the baseball in meters? a)4.81 x 10 –38 b)4.81 x 10 – 41 c)1.08 x 10 – 34 d)1.08 x 10 – 37 e)1.08 x 10 – 40

6 Tro Chemistry: A Molecular Approach An electron in a hydrogen atom in the n = 6 energy level emits kJ/ mol of energy in a transition to a lower energy level. To what energy level does the electron fall? a)1 b)2 c)3 d)4 e)5

7 Tro Chemistry: A Molecular Approach a)1 b)2 c)3 d)4 e)5 An electron in a hydrogen atom in the n = 6 energy level emits kJ/ mol of energy in a transition to a lower energy level. To what energy level does the electron fall?

8 Tro Chemistry: A Molecular Approach Which of the following transitions for an electron in a hydrogen atom would release the largest quantum of energy? a) n = 3 → n = 1 b) n = 4 → n = 3 c) n = 1 → n = 4 d) n = 2 → n = 1

9 Tro Chemistry: A Molecular Approach Which of the following transitions for an electron in a hydrogen atom would release the largest quantum of energy? a) n = 3 → n = 1 b) n = 4 → n = 3 c) n = 1 → n = 4 d) n = 2 → n = 1

10 Tro Chemistry: A Molecular Approach Which of the following is NOT an allowed set of quantum numbers? a) n = 4l = 3 m l = 3 b) n = 1l = 0 m l = 0 c) n = 5l = 4 m l = – 2 d) n = 2l = 1 m l = 0 e) n = 3l = 3 m l = – 2

11 Tro Chemistry: A Molecular Approach Which of the following is NOT an allowed set of quantum numbers? a) n = 4l = 3 m l = 3 b) n = 1l = 0 m l = 0 c) n = 5l = 4 m l = – 2 d) n = 2l = 1 m l = 0 e) n = 3l = 3 m l = – 2


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