Question 1

For the hydrogen atom in the ground state, the radial probability density is 0 at r = 2a0 is approximately A)  2.34% B)  3.67% C)  5.86% D)  6.25% E)  7.43% " class="answers-bank-image d-inline" rel="preload" > The probability of finding the electron in range Δ\DeltaΔ r = 0.08a0 at r = 2a0 is approximately

Accepted Answer

A)   2.34%
B)   3.67%
C)   5.86%
D)   6.25%
E)   7.43% F) B) and D)
G) A) and E)

Question 2

A hydrogen atom is in a state with principal quantum number n = 3. A possible value for its orbital angular momentum is

Accepted Answer

A)   zero
B)   
C)   
D)   
E)   F) B) and D)
G) C) and D)

Question 3

The energy of a photon of visible light is on the order of

Accepted Answer

A)   10-6 eV
B)   10-3 eV
C)   1 eV
D)   103 eV
E)   106 eVF) B) and E)
G) B) and C)

Question 4

The p state of an electronic configuration corresponds to

Accepted Answer

A)   n = 2
B)   l = 2
C)   l = 1
D)   n = 0
E)   l = 0F) C) and D)
G) B) and D)

Question 5

A K  β\betaβ   X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

Accepted Answer

A)   24, Cr
B)   25, Mn
C)   26, Fe
D)   27, Co
E)   28, Ni F) C) and D)
G) B) and E)

Question 6

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT) , i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

Accepted Answer

A)   2.1 * 10-23 V
B)   34 kV
C)   27 V
D)   34 V
E)   27 kVF) A) and C)
G) B) and D)

Question 7

If the angular momentum is characterized by the quantum number z in units of   ? A)  -3, 0, +3 B)  -3, -2, -1, 0 C)  -2, -1, 0, +1, +2 D)  -3, -2, -1, 0, +1, +2, +3" class="answers-bank-image d-inline" rel="preload" > = 3, what are the possible values of Lz in units of z in units of   ? A)  -3, 0, +3 B)  -3, -2, -1, 0 C)  -2, -1, 0, +1, +2 D)  -3, -2, -1, 0, +1, +2, +3" class="answers-bank-image d-inline" rel="preload" > ?

Accepted Answer

A)   -3, 0, +3
B)   -3, -2, -1, 0
C)   -2, -1, 0, +1, +2
D)   -3, -2, -1, 0, +1, +2, +3E) B) and C)
F) A) and D)

Question 8

The energy of the nth level in a one-electron atom is En = -13.6(Z2/n2)  eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons) . What is the energy of the electron when it is in the third-lowest energy state?

Accepted Answer

A)   -24 eV
B)   -7.6 eV
C)   -1.5 eV
D)   24 eV
E)   7.6 eVF) A) and D)
G) A) and C)

Question 9

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n 2 eV, then calculate the transition between n levels that this emitted photon comes from.

Accepted Answer

A)   n = 2 to n = 3
B)   n = 4 to n = 3
C)   n = 5 to n = 2
D)   n = 3 to n = 2
E)   n = 2 to n = 4F) All of the above
G) A) and E)

Question 10

The energy of an X-ray photon of wavelength 3.0 * 10-10 m is

Accepted Answer

A)   1.0 *10-16 J
B)   9.9 * 10-16 J
C)   6.6 * 10-16 J
D)   2.2 *10-24 J
E)   3.2 * 10-29 JF) C) and E)
G) D) and E)

Question 11

The above figure shows a schematic energy-level diagram for the hydrogen atom. The series that represents the Balmer series is

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) B) and D)
G) B) and E)

Question 12

The number of electrons in the M shell for the element whose electronic configuration is
1s22s22p63s23p2
Must be

Accepted Answer

A)   2
B)   4
C)   6
D)   8
E)   10F) A) and B)
G) A) and C)

Question 13

According to Bohr's model, the radius of an electron at n = 4 is

Accepted Answer

A)   0.212 nm
B)   0.846 nm
C)   0.0265 nm
D)   0.00331 nm
E)   None of these is correct.F) B) and C)
G) A) and D)

Question 14

\alpha   characteristic line, an incoming electron must have a minimum energy of A)  EL - EM  B)  EK - EM  C)  EK - EL  D)  EN  E)  EM  " class="answers-bank-image d-inline" rel="preload" > The above diagram shows the ionization energy and the shell distribution for an  \alpha   characteristic line, an incoming electron must have a minimum energy of A)  EL - EM  B)  EK - EM  C)  EK - EL  D)  EN  E)  EM  " class="answers-bank-image d-inline" rel="preload" > atom. To produce the K  α\alphaα   characteristic line, an incoming electron must have a minimum energy of

Accepted Answer

A)   EL - EM 
B)   EK - EM 
C)   EK - EL 
D)   EN 
E)   EM  F) A) and B)
G) B) and E)

Question 15

In the Bohr Model of the hydrogen atom, what is the ratio of the speed of the electron moving in the n = 2 orbit divided by the speed of the electron in the n = 3 orbit?

Accepted Answer

A)   0.66
B)   1.5
C)   2.25
D)   0.44
E)   its speed is independent of nF) A) and B)
G) C) and E)

Question 16

The total number of distinct electron states (including spin)  when n = 5 is

Accepted Answer

A)   18
B)   22
C)   25
D)   50
E)   72F) B) and C)
G) A) and E)

Question 17

The first Bohr radius, r0, is 0.0529 nm and the corresponding energy, E0, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

Accepted Answer

A)   656 nm
B)   486 nm
C)   434 nm
D)   410 nm
E)   None of these is correct.F) A) and B)
G) C) and D)

Question 18

The set of quantum numbers for the probability density shown is

Accepted Answer

A)   n = 2,  = 0, m = 0
B)   n = 2,  = 1, m = 0
C)   n = 2,  = 1, m = 1
D)   n = 2,  = 0, m = 1
E)   n = 1,  = 1, m = 0F) B) and D)
G) C) and D)

Question 19

The constant in the Rydberg-Ritz formula is RH = 10.96776 µm-1. The wavelength predicted by this formula for n1 = 3 and n2 = 2 is

Accepted Answer

A)   656 nm
B)   486 nm
C)   434 nm
D)   410 nm
E)   None of these is correct.F) A) and C)
G) B) and E)

Question 20

In the Bohr Model of the hydrogen atom, what is the kinetic energy of the electron in the n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

Accepted Answer

A)   3.44 eV
B)   1.51 eV
C)   3.02 eV
D)   0.75 eV
E)   4.53 eVF) B) and C)
G) B) and E)

Exam 16: Atoms

In the Bohr Model of the hydrogen atom, what is the kinetic energy of the electron in the n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

Correct Answer
verified

The energy of a photon of visible light is on the order of

Correct Answer
verified

The above figure shows a schematic energy-level diagram for the hydrogen atom. The series that represents the Balmer series is

Correct Answer
verified

A hydrogen atom is in a state with principal quantum number n = 3. A possible value for its orbital angular momentum is

Correct Answer
verified

The total number of distinct electron states (including spin) when n = 5 is

Correct Answer
verified

Correct Answer
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The constant in the Rydberg-Ritz formula is R_H = 10.96776 µm^-1. The wavelength predicted by this formula for n₁ = 3 and n₂ = 2 is

Correct Answer
verified

Correct Answer
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The first Bohr radius, r₀, is 0.0529 nm and the corresponding energy, E₀, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

Correct Answer
verified

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT) , i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10^-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

Correct Answer
verified

The number of electrons in the M shell for the element whose electronic configuration is 1s²2s²2p⁶3s²3p² Must be

Correct Answer
verified

The energy of an X-ray photon of wavelength 3.0 * 10^-10 m is

Correct Answer
verified

A K _$\beta$ X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

Correct Answer
verified

The set of quantum numbers for the probability density shown is

Correct Answer
verified

According to Bohr's model, the radius of an electron at n = 4 is

Correct Answer
verified

The p state of an electronic configuration corresponds to

Correct Answer
verified

In the Bohr Model of the hydrogen atom, what is the ratio of the speed of the electron moving in the n = 2 orbit divided by the speed of the electron in the n = 3 orbit?

Correct Answer
verified

If the angular momentum is characterized by the quantum number = 3, what are the possible values of L_z in units of ?

Correct Answer
verified

The energy of the nth level in a one-electron atom is E_n = -13.6(Z²/n²) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons) . What is the energy of the electron when it is in the third-lowest energy state?

Correct Answer
verified

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n ² eV, then calculate the transition between n levels that this emitted photon comes from.

Correct Answer
verified

Exam 16: Atoms

In the Bohr Model of the hydrogen atom, what is the kinetic energy of the electron in the n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

Correct AnswerverifiedShow Answer

The energy of a photon of visible light is on the order of

Correct AnswerverifiedShow Answer

The above figure shows a schematic energy-level diagram for the hydrogen atom. The series that represents the Balmer series is

Correct AnswerverifiedShow Answer

A hydrogen atom is in a state with principal quantum number n = 3. A possible value for its orbital angular momentum is

Correct AnswerverifiedShow Answer

The total number of distinct electron states (including spin) when n = 5 is

Correct AnswerverifiedShow Answer

For the hydrogen atom in the ground state, the radial probability density is The probability of finding the electron in range Δ\DeltaΔ r = 0.08a0 at r = 2a0 is approximately

Correct AnswerverifiedShow Answer

The constant in the Rydberg-Ritz formula is RH = 10.96776 µm-1. The wavelength predicted by this formula for n1 = 3 and n2 = 2 is

Correct AnswerverifiedShow Answer

The above diagram shows the ionization energy and the shell distribution for an atom. To produce the K α\alphaα characteristic line, an incoming electron must have a minimum energy of

Correct AnswerverifiedShow Answer

The first Bohr radius, r0, is 0.0529 nm and the corresponding energy, E0, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

Correct AnswerverifiedShow Answer

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT) , i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

Correct AnswerverifiedShow Answer

The number of electrons in the M shell for the element whose electronic configuration is 1s22s22p63s23p2 Must be

Correct AnswerverifiedShow Answer

The energy of an X-ray photon of wavelength 3.0 * 10-10 m is

Correct AnswerverifiedShow Answer

A K β\betaβ X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

Correct AnswerverifiedShow Answer

The set of quantum numbers for the probability density shown is

Correct AnswerverifiedShow Answer

According to Bohr's model, the radius of an electron at n = 4 is

Correct AnswerverifiedShow Answer

The p state of an electronic configuration corresponds to

Correct AnswerverifiedShow Answer

In the Bohr Model of the hydrogen atom, what is the ratio of the speed of the electron moving in the n = 2 orbit divided by the speed of the electron in the n = 3 orbit?

Correct AnswerverifiedShow Answer

If the angular momentum is characterized by the quantum number = 3, what are the possible values of Lz in units of ?

Correct AnswerverifiedShow Answer

The energy of the nth level in a one-electron atom is En = -13.6(Z2/n2) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons) . What is the energy of the electron when it is in the third-lowest energy state?

Correct AnswerverifiedShow Answer

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n 2 eV, then calculate the transition between n levels that this emitted photon comes from.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The constant in the Rydberg-Ritz formula is R_H = 10.96776 µm^-1. The wavelength predicted by this formula for n₁ = 3 and n₂ = 2 is

Correct Answer
verified

Correct Answer
verified

The first Bohr radius, r₀, is 0.0529 nm and the corresponding energy, E₀, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

Correct Answer
verified

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT) , i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10^-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

Correct Answer
verified

The number of electrons in the M shell for the element whose electronic configuration is 1s²2s²2p⁶3s²3p² Must be

Correct Answer
verified

The energy of an X-ray photon of wavelength 3.0 * 10^-10 m is

Correct Answer
verified

A K _$\beta$ X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If the angular momentum is characterized by the quantum number = 3, what are the possible values of L_z in units of ?

Correct Answer
verified

The energy of the nth level in a one-electron atom is E_n = -13.6(Z²/n²) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons) . What is the energy of the electron when it is in the third-lowest energy state?

Correct Answer
verified

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n ² eV, then calculate the transition between n levels that this emitted photon comes from.

Correct Answer
verified