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Quantum Physics (College)

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Quantum Physics

Instructions: Read each question carefully. Choose the answer that best fits the question. Short answer response questions must be responded to in complete sentences. If the question involves calculations, you must show all your math work.

What is the correct value of Planck's constant(h) according to Planck's quantum theory?
  1. [math]h = 6.625 xx 10^-34 J[/math][math][/math]
  2. [math]h = 6.520 xx 10^-30 C[/math]
  3. [math]h = 6.645 xx 10^-25 J[/math]
  4. [math]h = 6.21 xx 10^-20 C[/math]
An electron has a principal quantum number of 2. The number of sub shells and orbitals would be, respectively,
  1. 2 and 3
  2. 2 and 5
  3. 2 and 7
  4. 2 and 4
Angular momentum of the electron is defined by the quantum number that is denoted as
  1. n
  2. l
  3. s
  4. m
According to                                                             , two electrons in an atom cannot have the same set of all four quantum numbers.
Which of the following is represented by the discrete lines in bright-line spectra?
  1. definite speeds of light
  2. definite frequencies
  3. definite wavelengths
  4. none of the above
Which of the following equations represents the energy lost or gained?
  1. [math]∆E=∆mc^2[/math]
  2. [math]∆E=∆(mc)^2[/math]
  3. [math]∆E=nhv[/math]
  4. [math]∆E={nh}/v[/math]
How is energy transferred?
  1. in packets of energy called protons
  2. in the form of subatomic particles
  3. in the form of photons and subatomic particles
  4. in the form of photons
Calculate ∆E when the following transition occurs in a hydrogen atom: [math]n=4 rarr n=2[/math].
  1. [math]-1.36 xx 10^-19 J[/math]
  2. [math]-4.084 xx 10^-19 J[/math]
  3. [math]-5.45 xx 10^-19 J[/math]
  4. [math]4.084 xx 10^-19 J[/math]
Which of the following equations represents energy that can be used in problems involving specific energy transitions?
  1. E=[math](-2.178 xx 10^-18 J)(Z^2/n^2)[/math]
  2. ∆E=[math]h/{mv}[/math]
  3. [math]∆E=nhv[/math]
  4. ∆E=hf
Which of the following equations can be used to solve for wavelength in diffraction patterns?
  1. [math]lambda={hm}/v[/math]
  2. [math]lambda=v/{mh}[/math]
  3. [math]lambda={h}/m xx v[/math]
  4. [math]lambda=h/{mv}[/math]

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