Question 1

The Bohr radius of the hydrogen atom is 0.529 × 10-10 m. What is the radius of the n = 2 state?

Accepted Answer

A)  1.06 × 10-10 m 
B)  2.12 × 10-10 m 
C)  0.265 × 10-10 m 
D)  0.529 × 10-10 m 
E)  4.23 × 10-10 m 
A)  1.06 × 10-10 m 
B)  2.12 × 10-10 m 
C)  0.265 × 10-10 m 
D)  0.529 × 10-10 m 
E)  4.23 × 10-10 m

Question 2

The energy of the ground state in the Bohr model of the hydrogen atom is -13.6 eV. In a transition from the n = 2 state to the n = 4 state, a photon of energy

Accepted Answer

A)  3.40 eV is emitted. 
B)  3.40 eV is absorbed. 
C)  2.55 eV is emitted. 
D)  2.55 eV is absorbed. 
E)  0.85 eV is absorbed. 
A)  3.40 eV is emitted. 
B)  3.40 eV is absorbed. 
C)  2.55 eV is emitted. 
D)  2.55 eV is absorbed. 
E)  0.85 eV is absorbed.

Question 3

Upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of   What is the work function of this metal? (h = 6.626 × 10-34 J ∙ s, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J)

Accepted Answer

A)  3.73 eV 
B)  3.13 eV 
C)  4.33 eV 
D)  4.92 eV 
A)  3.73 eV 
B)  3.13 eV 
C)  4.33 eV 
D)  4.92 eV

Question 4

Calculate the kinetic energy (in eV) of a nonrelativistic neutron that has a de Broglie wavelength of   (h = 6.626 × 10-34 J ∙ s, mneutron = 1.675 × 10-27 kg,
1 eV = 1.60 × 10-19 J)

Accepted Answer

Question 5

Light excites atomic hydrogen from its lowest level to the n = 4 level. What is the energy of the light? The energy of the lowest level is -13.6 eV.

Accepted Answer

A)  12.8 eV 
B)  3.40 eV 
C)  0.850 eV 
D)  26.4 eV 
A)  12.8 eV 
B)  3.40 eV 
C)  0.850 eV 
D)  26.4 eV

Exam 38: Quantization

The Bohr radius of the hydrogen atom is 0.529 × 10-10 m. What is the radius of the n = 2 state?

The energy of the ground state in the Bohr model of the hydrogen atom is -13.6 eV. In a transition from the n = 2 state to the n = 4 state, a photon of energy

Upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of What is the work function of this metal? (h = 6.626 × 10-34 J ∙ s, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J)

Calculate the kinetic energy (in eV) of a nonrelativistic neutron that has a de Broglie wavelength of (h = 6.626 × 10-34 J ∙ s, mneutron = 1.675 × 10-27 kg, 1 eV = 1.60 × 10-19 J)

Light excites atomic hydrogen from its lowest level to the n = 4 level. What is the energy of the light? The energy of the lowest level is -13.6 eV.

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The Bohr radius of the hydrogen atom is 0.529 × 10^-10 m. What is the radius of the n = 2 state?

Upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of What is the work function of this metal? (h = 6.626 × 10^-34 J ∙ s, c = 3.00 × 10⁸ m/s, 1 eV = 1.60 × 10^-19 J)

Calculate the kinetic energy (in eV) of a nonrelativistic neutron that has a de Broglie wavelength of (h = 6.626 × 10^-34 J ∙ s, m_neutron = 1.675 × 10^-27 kg, 1 eV = 1.60 × 10^-19 J)