chapter 7 electronic structure of atoms
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Chapter 7 Electronic Structure of Atoms. Considering only the n = 1 to n = 5 states in the hydrogen atom, which transition will emit the most energy?. n = 5 to n = 4 n = 5 to n = 2 n = 3 to n = 1 n = 3 to n = 2 n = 4 to n = 2. - PowerPoint PPT PresentationTRANSCRIPT
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Chapter 7Electronic Structure of Atoms
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Considering only the n = 1 to n = 5 states in the hydrogen atom, which transition will emit the most energy?
1. n = 5 to n = 4
2. n = 5 to n = 2
3. n = 3 to n = 1
4. n = 3 to n = 2
5. n = 4 to n = 2
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1. n = 5 to n = 4
2. n = 5 to n = 2
3. n = 3 to n = 1
4. n = 3 to n = 2
5. n = 4 to n = 2
Considering only the n = 1 to n = 5 states in the hydrogen atom, which transition will emit the most energy?
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Considering only the n = 1 to n = 5 states in the hydrogen atom, which transition will emit the longest wavelength?
1. n = 5 to n = 4
2. n = 5 to n = 2
3. n = 3 to n = 1
4. n = 3 to n = 2
5. n = 4 to n = 2
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1. n = 5 to n = 4
2. n = 5 to n = 2
3. n = 3 to n = 1
4. n = 3 to n = 2
5. n = 4 to n = 2
Considering only the n = 1 to n = 5 states in the hydrogen atom, which transition will emit the longest wavelength?
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What are the valence electrons of vanadium?
1. 4s2
2. 3d3
3. 4s2 3d3
4. 3d5
5. 4d5
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1. 4s2
2. 3d3
3. 4s2 3d3
4. 3d5
5. 4d5
What are the valence electrons of vanadium?
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What are the valence electrons of gallium?
1. 4s2
2. 4p1
3. 4s2 3d10 4p1
4. 4s2 3d10
5. 4s2 4p1
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1. 4s2
2. 4p1
3. 4s2 3d10 4p1
4. 4s2 3d10
5. 4s2 4p1
What are the valence electrons of gallium?
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What is the maximum number of orbitals described by the quantum numbers:
1. 12. 33. 54. 85. 9
n = 3 l = 2
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1. 12. 33. 54. 85. 9
n = 3 l = 2
What is the maximum number of orbitals described by the quantum numbers:
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What is the maximum number of electrons described by the quantum numbers:
1. 72. 143. 164. 325. 48
n = 4
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What is the maximum number of electrons described by the quantum numbers:
1. 72. 143. 164. 325. 48
n = 4
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How many nodal planes does a d orbital have?
1. 02. 13. 24. 35. 4
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1. 02. 13. 24. 35. 4
How many nodal planes does a d orbital have?
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How many unpaired electrons does selenium have?
1. 02. 23. 44. 65. 8
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1. 02. 23. 44. 65. 8
How many unpaired electrons does selenium have?
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How many unpaired electrons does chromium have?
1. 02. 23. 44. 65. 8
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1. 02. 23. 44. 65. 8
How many unpaired electrons does chromium have?
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What is the wavelength for radiation transmitted by WGR, 550 AM (550 kHz)?
1. 0.545 m2. 5.45 m3. 545 m4. 0.0018 m5. 1.8 m
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Correct Answer:
1. 0.545 m2. 5.45 m3. 545 m4. 0.0018 m5. 1.8 m
)s10(5.5
)ms10(3.015
18
c
545
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Predict which of the following electronic transitions will produce the longest wavelengthspectral line.
1. n = 4 to n = 22. n = 5 to n = 23. n = 5 to n = 34. n = 6 to n = 4
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Correct Answer:
1. n = 4 to n = 22. n = 5 to n = 23. n = 5 to n = 34. n = 6 to n = 4
The wavelength increases as frequency decreases. The lowest frequency (longest wavelength) is associated with the lowest energy, and the smallest energy difference here is between n = 6 and n = 4.
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What is the wavelength of a helium4 ion moving in a cyclotron at 1.0% the speed of light? Mass of helium 4 ion = 6.6 1027 g.
1. 3.3 106 m
2. 3.3 108 m
3. 3.3 1011 m
4. 3.3 1014 m
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Correct Answer:
1. 3.3 106 m
2. 3.3 108 m
3. 3.3 1011 m
4. 3.3 1014 m
)ms10kg)(3.010(6.6
Js)10(6.631630
34
mv
h
11103.3
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Which of the following is not an allowed set of quantum numbers?
1. n = 3, l = 1, ml = 1
2. n = 3, l = 3, ml =23. n = 4, l = 0, ml = 0
4. n = 3, l = 1, ml =1
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Correct Answer:
1. n = 3, l = 1, ml = 1
2. n = 3, l = 3, ml =23. n = 4, l = 0, ml = 0
4. n = 3, l = 1, ml =1
The value of l can be no larger than n 1.
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How many electrons maximum can exist in the 4d orbital?
1. 2 2. 63. 104. 14
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Correct Answer:
1. 2 2. 63. 104. 14
There are five 4d orbitals, each of which can contain up to 2 electrons each for a total of 10 maximum.
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The electron subshell 3p represents the principal quantum number n = ___ and azimuthal quantum number l = ___.
1. 3; 2 2. 2; 33. 3; 14. 1; 3
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Correct Answer:
1. 3; 2 2. 2; 33. 3; 14. 1; 3
The principal quantum number n is 3, and a p orbital indicates l = 1.
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The maximum number of electrons in an atom that can exist in the 4f subshell and have ml = 1 is
1. 2 2. 73. 144. 32
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Correct Answer:
1. 2 2. 73. 144. 32
For any value of ml, the maximum number of electrons is 2.
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The following orbital diagram represents the electron configuration of which element?
1. Carbon2. Nitrogen3. Oxygen4. Neon
1s 2s 2p
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Correct Answer:
1. Carbon2. Nitrogen3. Oxygen4. Neon
1s 2s 2p
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The element with the electronic configuration [Ar]4s13d5 is:
1. Manganese2. Chromium3. Magnesium4. Iron
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Correct Answer:
1. Manganese2. Chromium3. Magnesium4. Iron
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What is the characteristic outer shell electron configuration of the noble gases?
1. s2p6
2. s2p5
3. s2p4
4. s2p3
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Correct Answer:
1. s2p6
2. s2p5
3. s2p4
4. s2p3
Noble gases have completely filled s and p orbitals, hence their lack of reactivity.
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Which of the following orbital diagrams obeys Hund’s rule for a ground-state atom?1.
2.
3.
3s 3d
3s 3d
3s 3d
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Correct Answer:
1.
2.
3.
3s 3d
3s 3d
3s 3d