In attempting to describe the atom, Bohr made a set of general ...

[berenicecastro]

In attempting to describe the atom, Bohr made a set of general assumptions. Which of the following statements is NOT a result or closely aligned with those general assumptions (the assumptions might not be quantum mechanically correct)?
  A. The radius of a hydrogen atom can be calculated from a certain combination of fundamental constants.
  B. Electrons in the hydrogen atom transfer between quantized energy states and can exist nowhere else in the atom but in these energy states.
  C. The velocity of the electron around the nucleus is the same in all orbits, although the shape of the orbit changes with higher values of n, the principal quantum number
  D.Stationary states are states where the electron accelerates around the nucleus but does not emit electromagnetic radiation.

Question 2

Scattering one unknown particle of Z₁ off of another, much more massive target particle of Z₂, you observe a certain number of particles scattered at an angle (your detector is of width , at an angle from the beam axis, centered at an angle around the beam axis). Use Rutherford's scattering equation (and assumptions) to determine which of the following changes to the experiment would be most likely to increase the number of particles you detect with your detector.
 

increase the velocity of the scattering particles.
  increase the angle around the beam axis.
  increase the cross section of the target nuclei.
  increase the number of neutrons in the scattering nuclei.
  increase the number of electrons in the target nuclei.

[yahahah24021]

Answer to Question 1

C.
The velocity of the electron is not constant according to Bohr, but instead changes with changing principal quantum number.

Answer to Question 2

C.
Increasing the probability of the target nucleus scattering the scattering particle would be most likely to increase the number of particles detected at a certain angle.