Question 1

Write the ground state electron configuration for Cr.

Accepted Answer

[Ar] 4s¹3d⁵

Question 2

Transition metal elements have atoms or ions with partially filled

Accepted Answer

A)  s subshells.
B)  p subshells.
C)  d subshells.
D)  f subshells.
E)  g subshells.

Question 3

Which of the following is the ground-state electron configuration of a calcium atom?

Accepted Answer

A)  [Ne]3s2
B)  [Ne]3s23p6
C)  [Ar]4s13d1
D)  [Ar]4s2
E)  [Ar]3d2

Question 4

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.

Question 5

The electron configuration of a ground-state copper atom is

Accepted Answer

A)  [Ar]4s24d4.
B)  [Ar]4s24p63d3.
C)  [Ar]4s23d9.
D)  [Ar]3d9.
E)  [Ar]4s13d10.

Question 6

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Accepted Answer

A)  1
B)  3
C)  5
D)  7
E)  9

Question 7

Complete this sentence: Atoms emit visible and ultraviolet light

Accepted Answer

A)  as electrons jump from lower energy levels to higher levels.
B)  as the atoms condense from a gas to a liquid.
C)  as electrons jump from higher energy levels to lower levels.
D)  as they are heated and the solid melts to form a liquid.
E)  as the electrons move about the atom within an orbit.

Question 8

What is the wavelength of radiation that has a frequency of 2.10 * 1014 s -1?

Accepted Answer

A)  6.30 * 1022 m
B)  7.00 * 102 nm
C)  7.00 * 105 m
D)  1.43 * 10-6 m
E)  3.00 * 108 m

Question 9

"No two electrons in an atom can have the same four quantum numbers" is a statement of

Accepted Answer

A)  the Pauli exclusion principle.
B)  Bohr's equation.
C)  Hund's rule.
D)  de Broglie's relation.
E)  Dalton's atomic theory. A

Question 10

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 these

Question 11

The frequency of the emitted light from a cesium atom is an intensive property.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

A)  Sn
B)  Sb
C)  Pb
D)  Bi
E)  Te B

Question 13

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

Question 14

Which of the following ground-state atoms is diamagnetic?

Accepted Answer

A)  Ca
B)  As
C)  Cu
D)  Fe
E)  none of these

Question 15

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)  10

Question 16

What is the total number of electrons possible in the 6s orbital?

Accepted Answer

The answer of What is the total number of electrons...

Question 17

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

Accepted Answer

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

Question 18

The orbital diagram for a ground-state oxygen atom is

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 19

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

Accepted Answer

A)  2
B)  3
C)  4
D)  6
E)  8

Question 20

How many unpaired electrons does a ground-state atom of sulfur have?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4

Exam 7: The Electronic Structure of Atoms

Write the ground state electron configuration for Cr.

Correct Answerverified[Ar] 4s13d5

Transition metal elements have atoms or ions with partially filled

Correct AnswerverifiedShow Answer

Which of the following is the ground-state electron configuration of a calcium atom?

Correct AnswerverifiedShow Answer

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

The electron configuration of a ground-state copper atom is

Correct AnswerverifiedShow Answer

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Correct AnswerverifiedShow Answer

Complete this sentence: Atoms emit visible and ultraviolet light

Correct AnswerverifiedShow Answer

What is the wavelength of radiation that has a frequency of 2.10 * 1014 s -1?

Correct AnswerverifiedShow Answer

"No two electrons in an atom can have the same four quantum numbers" is a statement of

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

The frequency of the emitted light from a cesium atom is an intensive property.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

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

Which of the following ground-state atoms is diamagnetic?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the total number of electrons possible in the 6s orbital?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The orbital diagram for a ground-state oxygen atom is

Correct AnswerverifiedShow Answer

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

Correct AnswerverifiedShow Answer

How many unpaired electrons does a ground-state atom of sulfur have?

Correct AnswerverifiedShow Answer

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[Ar] 4s¹3d⁵

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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

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What is the wavelength of radiation that has a frequency of 2.10 * 10¹⁴ s^-1?

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A

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

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B

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?

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