The Modern View of Atomic Structure; Atomic

Chapter , Problem 37E

(choose chapter or problem)

(a) Thomson’s cathode–ray tube (Figure 2.4) and the mass spectrometer (Figure 2.11) both involve the use of electric or magnetic fields to deflect charged particles. What are the charged particles involved in each of these experiments?

If no magnetic field were applied, would you expect the electron beam to be deflected upward or downward by the electric field?

Cathode-ray tube with perpendicular magnetic and electric fields. The cathode rays (electrons) originate at the cathode and are accelerated toward the anode, which has a hole in its center. A narrow beam of electrons passes through the hole and travels to the fluorescent screen.

(b) What are the labels on the axes of a mass spectrum? (c) To measure the mass spectrum of an atom, the atom must first lose one or more electrons. Which would you expect to be deflected more by the same setting of the electric and magnetic fields, a \(\mathrm{Cl}^{+}\) or a \(\mathrm{Cl}^{2}+\) ion?

Equation Transcription:

Text Transcription:

Cl^+

Cl2^+