Order The Atomic Spectra Discussion

Order The Atomic Spectra Discussion
Order The Atomic Spectra Discussion
All of the following are true statements regarding atomic
spectra except:
(A) Line spectra are typical of electrified gases and continuous
spectra are produced from the glow of hot objects.
(B) The electron configuration of the atom determines the type
of spectra that will be emitted.
(C) The number of lines in the spectra is directly proportional to
the number of electrons in the atom.
(D) Photons with lower wavelengths than those of visible light
can be can be emitted by atoms.
(E) The lines produced in atomic spectra support the quantum
mechanical model of that atom that says there are
achievable energy states.
485. Which of the following is true regarding the polarization of the
blue light in the experiment?
(A) Monochromatic light (one color) must be polarized in order
to pass it through a prism.
(B) The polarizer focuses the light so it hits the prism in a more
intense band.
(C) Polarization filters waves of light so that only waves
oriented in the same plane emerge from the polarizer.
(D) The polarizer is a weak prism that partially separates the
different wavelengths of light so that the prism can separate
them more effectively.
(E) The polarizer absorbs wavelengths of light that are not in
the visible range to prevent them from entering the prism.
Questions 486–488 refer to the following experiment.
A beam of gaseous hydrogen atoms is emitted from a hot furnace
and passed through a magnetic field onto a detector screen. The
interaction of the electron of the hydrogen atom and the magnetic
field causes the hydrogen atom to be deflected from a straight line
path. A tiny, permanent spot develops where an atom strikes the
Order The Atomic Spectra Discussion
486. If the spin of the electron in a hydrogen atom (only 1 electron)
was completely random, which of the following patterns would
be observed on the screen?
(A) One very small, focused spot in the middle of the screen
(B) A very dark spot in the center of the screen that becomes
more diffused as the radius increases
(C) No discrete spots would be observed
(D) Two spots of equal intensity
(E) A line in the shape of a wave
487. Which of the following observations was the experiment
designed to further study?
(A) The energy of atoms is quantized.
(B) Electrons have both wave- and particle-like properties.
(C) It is impossible to know both the position and momentum of
an electron with certainty.
(D) Electrons have a charge equal in magnitude but opposite in
charge to protons, but their mass is 1/1,800 that of a proton.
(E) Emission spectra lines of hydrogen and sodium can be split
when a magnetic field is applied.
488. The data produced in this experiment verify which of the
following concepts of the atom?
Order The Atomic Spectra Discussion
(A) Electron energies are quantized.
(B) Electron spin is either ½ or −½.
(C) Electrons occupy orbits around the nucleus.
(D) Electrons have properties of both waves and particles.
(E) The more that is known about an electron’s position, the
less can be known of its momentum (or velocity).
489. Particle-like properties of light include which of the following?
I. Interference
II. Polarization
III. The photoelectric effect
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) II and III only
Questions 490–493 refer to the following experiment.
A cathode ray strikes a detector in a straight line, but when a
magnetic or electric field is applied, the path of the ray is deflected.
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