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Which one of these transitions in the Bohr hydrogen atom model leads to the emission of the photon with the longest wavelength? 1.n i = 1 → n f = 3 2.n.

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Presentation on theme: "Which one of these transitions in the Bohr hydrogen atom model leads to the emission of the photon with the longest wavelength? 1.n i = 1 → n f = 3 2.n."— Presentation transcript:

1 Which one of these transitions in the Bohr hydrogen atom model leads to the emission of the photon with the longest wavelength? 1.n i = 1 → n f = 3 2.n i = 6 → n f = 5 3.n i = 4 → n f = 2 4.n i = 3 → n f = 6 5.n i = 5 → n f = 1

2 Dental lasers are based on neodymium yttrium aluminum garnet (Nd-YAG) crystal, with an emission wavelength of 1066 nm. What is the frequency of this laser? × Hz × 10 5 Hz × 10 2 Hz × Hz

3 The nitrogen laser emits light at nm. What is the energy of this light? × J × J × J × J

4 Which of the following is a list of allowed quantum numbers for an electron? 1. n = 1, l = 1, m l = 0, m s = ½ 2. n = 2, l = 0, m l = 1, m s = ½ 3. n = 3, l = 0, m l = 0, m s = ½ 4. n = 4, l = 3, m l = 4, m s = -½

5 What is the correct electron configuration for sulfur? 1.1s 2 2s 2 2p 6 3s13p 5 2.1s 2 2s 2 2p 6 3s 2 3p 4 3.1s 2 2s 2 2p 7 3s 2 3p 2 4.3s 2 3p 4

6 What is the correct condensed electronic configuration for Fe 3+ ? 1.[Ar]4s 2 3d 6 2.[Ar]4s 2 3d 3 3.[Ar]3d 5 4.[Ar]4s 2 3d 9

7 Which is the largest atom below? 1.O 2.N 3.Al 4.Sr

8 Key


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