Deck 22: All About Atoms

Question 1

The magnitude of the orbital angular momentum of an electron is what multiple of ? ( is a positive integer.)

A) 1
B) 1/2
C)
D)
E)

Answer 1

Question 2

The number of possible values of the magnetic quantum number associated with a given value of the orbital quantum number is:

A) 1
B) 2
C)
D)
E)

Answer 2

Question 3

An electron is in a quantum state for which there are seven allowed values of the z component of the angular momentum.The magnitude of the angular momentum is:

A)
B)
C)
D)
E)

Answer 3

Question 4

An electron in an atom is in a state with and The angle between and the z axis is:

A) 48.2 $\degree$
B) 60 $\degree$
C) 30 $\degree$
D) 35.3 $\degree$
E) 54.7 $\degree$

Question 5

An electron in an atom is in a state with The minimum angle between and the z axis is:

A) 0 $\degree$
B) 18.0 $\degree$
C) 24.1 $\degree$
D) 36.7 $\degree$
E) 33.6 $\degree$

Question 6

The Stern-Gerlach experiment makes use of:

A) a strong uniform magnetic field
B) a strong non-uniform magnetic field
C) a strong uniform electric field
D) a strong non-uniform electric field
E) strong perpendicular electric and magnetic fields

Question 7

The magnetic field is along the z axis in a Stern-Gerlach experiment. The force it exerts on a magnetic dipole with dipole moment is proportional to:

A)
B) B²
C) dB/dz
D) d²B/dz²
E) B dz

Question 8

A magnetic dipole is placed in a strong uniform magnetic field The associated force exerted on the dipole is:

A) along
B) along
C) along
D) along
E) zero

Question 9

To observe the Zeeman effect one uses:

A) a strong uniform magnetic field
B) a strong non-uniform magnetic field
C) a strong uniform electric field
D) a strong non-uniform electric field
E) mutually perpendicular electric and magnetic fields

Question 10

The Pauli exclusion principle is obeyed by:

A) all particles
B) all charged particles
C) all particles with spin quantum numbers of 1/2
D) all particles with spin quantum numbers of 1
E) all particles with mass

Question 11

No state in an atom can be occupied by more than one electron. This is most closely related to the:

A) wave nature of matter
B) finite value for the speed of light
C) Bohr magneton
D) Pauli exclusion principle
E) the Einstein-de Haas effect

Question 12

For any atom other that hydrogen and helium all electrons in the same shell have:

A) the same energy
B) the same magnitude of angular momentum
C) the same magnetic quantum number
D) the same spin quantum number
E) none of the above

Question 13

The states being filled from the beginning to end of the lanthanide series of atoms are:

A) n = 3, states
B) n = 4, states
C) n = 4, states
D) n = 4, states
E) n = 5, states

Question 14

The most energetic electron in any atom at the beginning of a period of the periodic table is in:

A) an state
B) an state
C) an state
D) an n = 0 state with unspecified angular momentum
E) an n = 1 state with unspecified angular momentum

Question 15

The most energetic electron in any atom at the end of a period of the periodic table is in:

A) an state
B) an state
C) an state
D) an n = 0 state with unspecified angular momentum
E) an n = 1 state with unspecified angular momentum

Question 16

The group of atoms at the ends of periods of the periodic table are called:

A) alkali metals
B) rare earths
C) transition metal atoms
D) alkaline atoms
E) inert gas atoms

Question 17

The group of atoms at the beginning of periods of the periodic table are called:

A) alkali metal atoms
B) rare earth atoms
C) transition metal atoms
D) alkaline atoms
E) inert gas atoms

Question 18

Suppose the energy required to ionize an argon atom is i, the energy to excite it is e, and its thermal energy at room temperature is t. In increasing order, these three energies are:

A) i, e, t
B) t, i, e
C) e, t, i
D) i, t, e
E) t, e, i

Question 19

The effective charge acting on a single valence electron outside a closed shell is about Ne, where N is:

A) the atomic number of the nucleus
B) the atomic mass of the atom
C) usually between 1 and 3
D) half the atomic number
E) less than 1

Question 20

A laser must be pumped to achieve:

A) a metastable state
B) fast response
C) stimulated emission
D) population inversion
E) the same wavelength for all photons

Question 21

Photons in a laser beam are produced by:

A) transitions from a metastable state
B) transitions from a state that decays rapidly
C) splitting of other photons
D) pumping
E) reflection from mirrors

Question 22

In a helium-neon laser, the laser light arises from a transition from a _________ state to a _________ state:

A) He, He
B) Ne, Ne
C) He, Ne
D) Ne, He
E) N, He

Question 23

A laser beam can be sharply focused because it is:

A) highly coherent
B) plane polarized
C) intense
D) circularly polarized
E) highly directional