Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
The product of the frequency and the wavelength of a wave equals the
a. | number of waves passing a point in a second. | b. | speed of the
wave. | c. | distance between wave crests. | d. | time for one full wave to
pass. |
|
|
|
2.
|
As it travels through space, electromagnetic radiation
a. | exhibits wavelike behavior. | c. | varies in
speed. | b. | loses energy. | d. | releases photons. |
|
|
|
3.
|
The specific wavelengths of light seen through a prism that are made when
high-voltage current is passed through a tube of hydrogen gas at low pressure is a
a. | line-emission spectrum. | c. | photoelectric
effect. | b. | electron configuration. | d. | continuous electromagnetic spectrum. |
|
|
|
4.
|
Which is not part of hydrogen's line-emission spectrum?
a. | Balmer series. | c. | Lyman series. | b. | Aufbau series. | d. | Paschen series. |
|
|
|
5.
|
The Bohr model of the atom was an attempt to explain hydrogen's
a. | density. | c. | mass. | b. | flammability. | d. | line-emission
spectrum. |
|
|
|
6.
|
According to the Bohr model of the atom, the single electron of a hydrogen atom
circles the nucleus
a. | in specific, allowed orbits. | b. | in one fixed orbit at all
times. | c. | at any of an infinite number of distances, depending on its
energy. | d. | counterclockwise. |
|
|
|
7.
|
Which energy-level change shown in the diagram below emits the highest
energy?  a. | an electron moving from E6 to
E5 | b. | an electron moving from E2 to
E4 | c. | an electron moving from E2 to
E3 | d. | an electron moving from E2 to
E1 |
|
|
|
8.
|
The change of an atom from an excited state to the ground state always
requires
a. | absorption of energy. | b. | emission of electromagnetic
radiation. | c. | release of visible light. | d. | an increase in electron
energy. |
|
|
|
9.
|
According to Bohr, electrons cannot reside at ____ in the figure
below.  a. | point A | c. | point C | b. | point B | d. | point D |
|
|
|
10.
|
Which model of the atom explains why excited hydrogen gas gives off certain
colors of light?
a. | the Bohr model | c. | Rutherford's model | b. | the de Broglie
model | d. | Planck's
theory |
|
|
|
11.
|
The region outside the nucleus where an electron can most probably be found is
the
a. | electron configuration. | c. | s
sublevel. | b. | quantum. | d. | electron cloud. |
|
|
|
12.
|
The size and shape of an electron cloud are most closely related to the
electron's
a. | charge. | c. | spin. | b. | mass. | d. | energy. |
|
|
|
13.
|
The quantum number that indicates the position of an orbital about the three
axes in space is the
a. | principal quantum number. | b. | angular momentum quantum
number. | c. | magnetic quantum number. | d. | spin quantum
number. |
|
|
|
14.
|
The main energy levels of an atom are indicated by the
a. | orbital quantum numbers. | b. | magnetic quantum numbers. | c. | spin quantum
numbers. | d. | principal quantum numbers. |
|
|
|
15.
|
What values can the angular momentum quantum number have when n =
2?
a. |  | c. | 0, 1, 2 | b. |  | d. | 0,
1 |
|
|
|
16.
|
The spin quantum number indicates that the number of possible spin states for an
electron in an orbital is
|
|
|
17.
|
The spin quantum number of an electron can be thought of as describing
a. | the direction of electron spin. | b. | whether the electron's charge is positive
or negative. | c. | the electron's exact location in orbit. | d. | the number of
revolutions the electron makes about the nucleus per second. |
|
|
|
18.
|
The set of orbitals that are dumbbell shaped and directed along the x,
y, and z axes are called
a. | d orbitals. | c. | f orbitals. | b. | p orbitals. | d. | s
orbitals. |
|
|
|
19.
|
The p orbitals are shaped like
a. | electrons. | c. | dumbbells. | b. | circles. | d. | spheres. |
|
|
|
20.
|
How many more electrons are needed to completely fill the third main energy
level if it already contains 8 electrons?
|
|
|
21.
|
Two electrons in the 1s orbital must have different spin quantum numbers
to satisfy
a. | quantum rule. | c. | the Pauli exclusion principle. | b. | the magnetic
rule. | d. | the Aufbau
principle. |
|
|
|
22.
|
The atomic sublevel with the next highest energy after 4p is
|
|
|
23.
|
The electron configuration for the carbon atom (C) is 1s2
2s2 2p2. The atomic number of carbon is
|
|
|
24.
|
The number of electrons in the highest energy level of the argon atom (atomic
number 18) is
|
|
|
25.
|
If an element has an octet of electrons in its highest main energy level, there
are ____ electrons in this level.
|