Question 1

In the following diagram of a wave

Accepted Answer

A)  (a) is amplitude and (b) is wavelength
B)  (a) is frequency and (b) is amplitude
C)  (a) is wavelength and (b) is frequency
D)  (a) is amplitude and (b) is frequency
E)  (a) is wavelength and (b) is amplitudeF) None of the above
G) B) and C)

Question 2

What is the wavelength of a ball bearing with a mass of 10.0 g, and a velocity of 10.0 cm/s?

Accepted Answer

6.63 * 10<...

Question 3

A single pulse of a laser yields an average of 5.00 * 1018 photons with  λ\lambdaλ  = 633 nm. If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

Accepted Answer

A)  3830
B)  3340
C)  38300
D)  2120
E)  212 F) B) and E)
G) None of the above

Question 4

A ground-state chromium atom has how many unpaired electrons?

Accepted Answer

A)  1
B)  2
C)  4
D)  5
E)  6F) A) and C)
G) A) and E)

Question 5

As the frequency of an electromagnetic wave increases

Accepted Answer

A)  its speed must increase.
B)  its wavelength must increase.
C)  its amplitude must increase.
D)  its energy must increase.E) A) and B)
F) A) and C)

Question 6

Which of the following atoms is paramagnetic both in its ground state and in all of its excited states?

Accepted Answer

A)  C
B)  N
C)  O
D)  Ti
E)  CrF) A) and C)
G) A) and E)

Question 7

Calculate the frequency of visible light having a wavelength of 486 nm.

Accepted Answer

A)  2.06 * 1014 /s
B)  2.06 * 106 /s
C)  6.17 * 1014 /s
D)  1.20 * 10-15 /s
E)  4.86 * 10-7 /sF) All of the above
G) A) and E)

Question 8

Which element has the following ground-state electron configuration? [Kr]5s24d105p3

Accepted Answer

A)  Sn
B)  Sb
C)  Pb
D)  Bi
E)  TeF) A) and E)
G) B) and C)

Question 9

Which of the following is diamagnetic both in its ground state and in all of its excited states?

Accepted Answer

A)  Mg
B)  Ne
C)  Cu
D)  Zn
E)  none of theseF) B) and D)
G) A) and E)

Question 10

What is the electron configuration of calcium?

Accepted Answer

1s²2s²2p⁶3s²3p...

Question 11

When the electron in a hydrogen atom falls from its first excited energy level to the ground state energy level, a photon with wavelength  λ\lambdaλ  is emitted. A proton having this same wavelength would have a velocity of

Accepted Answer

A)  3.87 m/s
B)  5990 m/s
C)  1.21 * 10-7 m/s
D)  3.26 m/s
E)  5.99 m/s F) A) and E)
G) A) and D)

Question 12

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Accepted Answer

A) True 
 B)False

Question 13

A ground-state atom of arsenic has

Accepted Answer

A)  no unpaired electrons.
B)  one unpaired electron.
C)  two unpaired electrons.
D)  three unpaired electrons.
E)  four unpaired electrons.F) A) and D)
G) D) and E)

Question 14

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution. If  Δ\DeltaΔ H for the reaction Cl2(g)  →\rarr→  2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Accepted Answer

A)  246.3 nm
B)  465.2 nm
C)  349.3 nm
D)  698.6 nm
E)  492.6 nm F) A) and E)
G) A) and D)

Question 15

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, _______ has the most energy.

Accepted Answer

The answer of The colors of the visible spectrum are...

Question 16

In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron traveling with a velocity of 7.0 * 103 kilometers per second. The mass of an electron is 9.1 * 10-28 g.

Accepted Answer

A)  1.0 * 10-13 m
B)  1.0 * 10-7 m
C)  1.0 m
D)  1.0 * 10-10 mE) A) and D)
F) None of the above

Question 17

A ground-state atom of iron has ___ unpaired electrons and is _____.

Accepted Answer

A)  0, diamagnetic
B)  6, diamagnetic
C)  3, paramagnetic
D)  5, paramagnetic
E)  4, paramagneticF) C) and D)
G) A) and B)

Question 18

Which element has the following ground-state electron configuration? [Kr]5s14d5

Accepted Answer

A)  Mn
B)  Mo
C)  Nb
D)  Re
E)  TcF) None of the above
G) A) and D)

Question 19

How many electrons are there in the 3rd principal energy level (n = 3) of a phosphorus atom?

Accepted Answer

A)  3
B)  5.
C)  6
D)  8
E)  10F) A) and B)
G) A) and C)

Question 20

Write the ground state electron configuration for a lead atom.

Accepted Answer

The answer of Write the ground state electron configuration for...

Exam 7: Quantum Theory and the Electronic Structure of Atoms

When the electron in a hydrogen atom falls from its first excited energy level to the ground state energy level, a photon with wavelength λ\lambdaλ is emitted. A proton having this same wavelength would have a velocity of

Correct AnswerverifiedShow Answer

What is the wavelength of a ball bearing with a mass of 10.0 g, and a velocity of 10.0 cm/s?

Correct Answerverified6.63 * 10<...View AnswerShow Answer

A single pulse of a laser yields an average of 5.00 * 1018 photons with λ\lambdaλ = 633 nm. If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

Correct AnswerverifiedShow Answer

How many electrons are there in the 3rd principal energy level (n = 3) of a phosphorus atom?

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What is the electron configuration of calcium?

Correct Answerverified1s22s22p63s23p...View AnswerShow Answer

As the frequency of an electromagnetic wave increases

Correct AnswerverifiedShow Answer

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, _______ has the most energy.

Correct AnswerverifiedShow Answer

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution. If Δ\DeltaΔ H for the reaction Cl2(g) →\rarr→ 2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Correct AnswerverifiedShow Answer

Which of the following is diamagnetic both in its ground state and in all of its excited states?

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A ground-state atom of iron has ___ unpaired electrons and is _____.

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In the following diagram of a wave

Correct AnswerverifiedShow Answer

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Correct AnswerverifiedShow Answer

In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron traveling with a velocity of 7.0 * 103 kilometers per second. The mass of an electron is 9.1 * 10-28 g.

Correct AnswerverifiedShow Answer

Which of the following atoms is paramagnetic both in its ground state and in all of its excited states?

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A ground-state chromium atom has how many unpaired electrons?

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A ground-state atom of arsenic has

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Which element has the following ground-state electron configuration? [Kr]5s24d105p3

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Which element has the following ground-state electron configuration? [Kr]5s14d5

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Write the ground state electron configuration for a lead atom.

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Calculate the frequency of visible light having a wavelength of 486 nm.

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When the electron in a hydrogen atom falls from its first excited energy level to the ground state energy level, a photon with wavelength $\lambda$ is emitted. A proton having this same wavelength would have a velocity of

Correct Answer
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6.63 * 10<...
View Answer

A single pulse of a laser yields an average of 5.00 * 10¹⁸ photons with $\lambda$ = 633 nm. If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

Correct Answer
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Correct Answer
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Correct Answer
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1s²2s²2p⁶3s²3p...
View Answer

Correct Answer
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Correct Answer
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A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution. If $\Delta$ H for the reaction Cl₂(g) $\rarr$ 2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

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Correct Answer
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A ground-state atom of iron has _ unpaired electrons and is ___.

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In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron traveling with a velocity of 7.0 * 10³ kilometers per second. The mass of an electron is 9.1 * 10^-28 g.

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Correct Answer
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Which element has the following ground-state electron configuration? [Kr]5s²4d¹⁰5p³

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Which element has the following ground-state electron configuration? [Kr]5s¹4d⁵

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