Question 1

Calculate the orbital Bohr radius of the  
Excited state in a hydrogen atom.

Accepted Answer

A) 0.212 nm 
B) 0.106 nm 
C) 0.170 nm 
D) 0.244 nm 
A) 0.212 nm 
B) 0.106 nm 
C) 0.170 nm 
D) 0.244 nm

Question 2

Which one of the following is the correct electronic configuration for carbon,which has 6 electrons?

Accepted Answer

A) 1s2 2s2 2p2 
B) 1s1 2p1 
C) 1s1 2s2 2p1 
D) 1s1 2s1 2p1 
E) 1s2 2s2 2p4 
A) 1s2 2s2 2p2 
B) 1s1 2p1 
C) 1s1 2s2 2p1 
D) 1s1 2s1 2p1 
E) 1s2 2s2 2p4

Question 3

A hydrogen atom is excited to the n = 11 level.Its decay to the n = 7 level is detected in a photographic plate.What is the wavelength of the light photographed? (c = 3.00 × 108 m/s,1 eV = 1.60 × 10-19 J,h = 6.626 × 10-34 J ∙ s)

Accepted Answer

A) 7,510 nm 
B) 4,670 nm 
C) 12,400 nm 
D) 4,380 nm 
A) 7,510 nm 
B) 4,670 nm 
C) 12,400 nm 
D) 4,380 nm

Question 4

The distance between adjacent orbits in a hydrogen atom

Accepted Answer

A) increases with increasing values of n. 
B) decreases with increasing values of n. 
C) remains constant for all values of n. 
D) varies randomly with increasing values of n. 
A) increases with increasing values of n. 
B) decreases with increasing values of n. 
C) remains constant for all values of n. 
D) varies randomly with increasing values of n.

Question 5

Which of the following values can be taken by the electron spin quantum number,ms?

Accepted Answer

A) ±1/2 
B) 0 
C) ±1 
D) ±2 
E) ±3 
A) ±1/2 
B) 0 
C) ±1 
D) ±2 
E) ±3

Question 6

What is the energy of the photon emitted when an electron drops from the  
State to the  
State in a hydrogen atom?

Accepted Answer

A) 0.244 eV 
B) 0.264 eV 
C) 0.283 eV 
D) 0.303 eV 
A) 0.244 eV 
B) 0.264 eV 
C) 0.283 eV 
D) 0.303 eV

Question 7

How many 3d electron states can an atom have?

Accepted Answer

A) 0 
B) 4 
C) 6 
D) 8 
E) 10 
A) 0 
B) 4 
C) 6 
D) 8 
E) 10

Question 8

What is the ionization energy of the neutral hydrogen atom?

Accepted Answer

A) 27.2 eV 
B) 13.6 eV 
C) 6.8 eV 
D) none of the given answers 
A) 27.2 eV 
B) 13.6 eV 
C) 6.8 eV 
D) none of the given answers

Question 9

What is the shortest wavelength in the Balmer series?

Accepted Answer

A) 328 nm 
B) 365 nm 
C) 456 nm 
D) 656 nm 
E) 820 nm 
A) 328 nm 
B) 365 nm 
C) 456 nm 
D) 656 nm 
E) 820 nm

Question 10

In its ground state,the quantum numbers (n,ℓ,m1,ms)for hydrogen are,respectively,

Accepted Answer

A) 1,1,1,1. 
B) 1,0,0,0. 
C) 1,0,0,±1/2. 
D) 1,1,1,±1/2. 
A) 1,1,1,1. 
B) 1,0,0,0. 
C) 1,0,0,±1/2. 
D) 1,1,1,±1/2.

Question 11

Which one of the following is the correct electronic configuration for the sodium atom,which has 11 electrons?

Accepted Answer

A) 1s1 2s2 3p6 2s2 
B) 1s2 2s1 3p6 2s2 
C) 1s1 2s2 2p6 2s2 
D) 1s2 2s2 2p6 3s2 
E) 1s2 2s2 2p6 3s1 
A) 1s1 2s2 3p6 2s2 
B) 1s2 2s1 3p6 2s2 
C) 1s1 2s2 2p6 2s2 
D) 1s2 2s2 2p6 3s2 
E) 1s2 2s2 2p6 3s1

Question 12

In the n = 1 state,the energy of the hydrogen atom is -13.6 eV.What is its energy in the n = 2 state?

Accepted Answer

A) -6.79 eV 
B) -4.53 eV 
C) -3.40 eV 
D) -1.51 eV 
A) -6.79 eV 
B) -4.53 eV 
C) -3.40 eV 
D) -1.51 eV

Question 13

What is the atomic number of a neutral atom that has an electron configuration of 1s2 2s2 2p6 3s2 3p2?

Accepted Answer

A) 5 
B) 11 
C) 14 
D) 20 
A) 5 
B) 11 
C) 14 
D) 20

Question 14

If a hydrogen atom originally in a state with principal quantum number n is excited to state n' = 2n,then

Accepted Answer

A) its radius and binding energy will double. 
B) its radius will quadruple and the binding energy will double. 
C) its radius will double and the binding energy will quadruple. 
D) its radius will quadruple and the binding energy will be reduced by a factor of four. 
E) its radius and binding energy will quadruple. 
A) its radius and binding energy will double. 
B) its radius will quadruple and the binding energy will double. 
C) its radius will double and the binding energy will quadruple. 
D) its radius will quadruple and the binding energy will be reduced by a factor of four. 
E) its radius and binding energy will quadruple.

Question 15

The orbital angular momentum quantum number ℓ can have any integer value ranging from

Accepted Answer

A) 0 to n. 
B) 0 to (n-1). 
C) 1 to n. 
D) 1 to (n+1). 
E) -n to n. 
A) 0 to n. 
B) 0 to (n-1). 
C) 1 to n. 
D) 1 to (n+1). 
E) -n to n.

Question 16

What value of n corresponds to a wavelength of 91.7 nm in the Lyman series?

Accepted Answer

A) 1 
B) 3 
C) 5 
D) 9 
E) 13 
A) 1 
B) 3 
C) 5 
D) 9 
E) 13

Question 17

Hydrogen atoms can emit four spectral lines with visible colors from red to violet.These four visible lines emitted by hydrogen atoms are produced by electrons

Accepted Answer

A) that start in the n = 2 level. 
B) that end up in the n = 2 level. 
C) that end up in the n = 3 level. 
D) that end up in the ground state. 
E) that start in the ground state. 
A) that start in the n = 2 level. 
B) that end up in the n = 2 level. 
C) that end up in the n = 3 level. 
D) that end up in the ground state. 
E) that start in the ground state.

Question 18

How many values of the magnetic quantum number,mℓ,correspond to a value of ℓ = 4?

Accepted Answer

A) 3 
B) 5 
C) 8 
D) 9 
E) 7 
A) 3 
B) 5 
C) 8 
D) 9 
E) 7

Question 19

An atom has completely filled inner shells and a single valence electron in an excited p state.The filled inner shells have an orbital momentum equal to zero.What is the magnitude of the orbital angular momentum of the atom?

Accepted Answer

A) 1.0   
B) 1.2   
C) 1.4   
D) 1.7   
E) 2.0   
A) 1.0   
B) 1.2   
C) 1.4   
D) 1.7   
E) 2.0

Question 20

If ℓ = 4,which one of the following is a possible quantum number for n?

Accepted Answer

A) 0 
B) 2 
C) 3 
D) 4 
E) 8 
A) 0 
B) 2 
C) 3 
D) 4 
E) 8

Exam 31: Atomic Physics

Calculate the orbital Bohr radius of the Excited state in a hydrogen atom.

Which one of the following is the correct electronic configuration for carbon,which has 6 electrons?

A hydrogen atom is excited to the n = 11 level.Its decay to the n = 7 level is detected in a photographic plate.What is the wavelength of the light photographed? (c = 3.00 × 108 m/s,1 eV = 1.60 × 10-19 J,h = 6.626 × 10-34 J ∙ s)

The distance between adjacent orbits in a hydrogen atom

Which of the following values can be taken by the electron spin quantum number,ms?

What is the energy of the photon emitted when an electron drops from the State to the State in a hydrogen atom?

How many 3d electron states can an atom have?

What is the ionization energy of the neutral hydrogen atom?

What is the shortest wavelength in the Balmer series?

In its ground state,the quantum numbers (n,ℓ,m1,ms)for hydrogen are,respectively,

Which one of the following is the correct electronic configuration for the sodium atom,which has 11 electrons?

In the n = 1 state,the energy of the hydrogen atom is -13.6 eV.What is its energy in the n = 2 state?

What is the atomic number of a neutral atom that has an electron configuration of 1s2 2s2 2p6 3s2 3p2?

If a hydrogen atom originally in a state with principal quantum number n is excited to state n' = 2n,then

The orbital angular momentum quantum number ℓ can have any integer value ranging from

What value of n corresponds to a wavelength of 91.7 nm in the Lyman series?

Hydrogen atoms can emit four spectral lines with visible colors from red to violet.These four visible lines emitted by hydrogen atoms are produced by electrons

How many values of the magnetic quantum number,mℓ,correspond to a value of ℓ = 4?

An atom has completely filled inner shells and a single valence electron in an excited p state.The filled inner shells have an orbital momentum equal to zero.What is the magnitude of the orbital angular momentum of the atom?

If ℓ = 4,which one of the following is a possible quantum number for n?

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A hydrogen atom is excited to the n = 11 level.Its decay to the n = 7 level is detected in a photographic plate.What is the wavelength of the light photographed? (c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10^-19J,h = 6.626 × 10^-34 J ∙ s)

Which of the following values can be taken by the electron spin quantum number,m_s?

In its ground state,the quantum numbers (n,ℓ,m₁,m_s)for hydrogen are,respectively,

What is the atomic number of a neutral atom that has an electron configuration of 1s²2s²2p⁶3s²3p²?

How many values of the magnetic quantum number,m_ℓ,correspond to a value of ℓ = 4?