Chapter 28: Quantum Mechanics Of Atoms
- 1.The probability of finding an electron in a hydrogen atom is directly proportional to its
- A.
Energy.
- B.
Momentum.
- C.
Wave function.
- D.
Square of the wave function.
- 2.The reason the position of a particle cannot be specified with infinite precision is the
- A.
Exclusion principle.
- B.
Uncertainty principle.
- C.
Photoelectric effect.
- D.
Principle of relativity.
- 3.If the accuracy in measuring the position of a particle increases, the accuracy in measuring its velocity will
- A.
Increase.
- B.
Decrease.
- C.
Remain the same.
- D.
Be uncertain.
- 4.If the accuracy in measuring the velocity of a particle increases, the accuracy in measuring its position will
- A.
Increase.
- B.
Decrease.
- C.
Remain the same.
- D.
Be uncertain.
- 5.The quantity "h-bar" has a value of
- A.
1.055 * 10^(-34) J*s.
- B.
6.626 * 10^(-34) J*s.
- C.
8.85 * 10^(-12) J*s.
- D.
8.988 * 10^9 J*s.
- 6.The principal quantum number can have any integer value ranging from
- A.
-∞ to +∞.
- B.
0 to ∞.
- C.
1 to ∞.
- D.
1 to 100.
- 7.The orbital quantum number can have any integer value ranging from
- A.
0 to n.
- B.
0 to (n-1).
- C.
1 to n.
- D.
1 to (n+1).
- 8.The magnetic quantum number can have any integer value ranging from
- A.
-n to +n.
- B.
-l to +l.
- C.
0 to n.
- D.
0 to l.
- 9.The spin quantum number can have values of
- A.
-1/2, -1, 0, +1, +1/2
- B.
-1/2, -1, +1, +1/2
- C.
-1/2, 0, +1/2
- D.
-1/2, +1/2
- 10.If l = 4, which one of the following is a possible quantum number for n?
- A.
0
- B.
2
- C.
4
- D.
8
- 11.If n = 5, which one of the following is not an allowed magnetic quantum number?
- A.
0
- B.
2
- C.
4
- D.
5
- 12.The wave equation for hydrogen has solutions only if the three quantum numbers n, l, and m_l meet certain conditions. One of these conditions specifies that n
- A.
Can be any real number.
- B.
Can be any non-negative integer.
- C.
Can be any integer.
- D.
Can be any positive integer.
- 13.The wave equation for hydrogen has solutions only if the three quantum numbers n, l, and m_l meet certain conditions. One of these conditions specifies that m_l
- A.
Has an absolute value either equal to or less than l.
- B.
Is equal to or less than n.
- C.
Is equal to or greater than 1.
- D.
Can be any integer.
- 14.In the ground state, the quantum numbers (n, l, m_l, m_s) for hydrogen are, respectively,
- A.
1, 1, 1, 1.
- B.
1, 0, 0, 0.
- C.
1, 0, 0, ±1/2.
- D.
1, 1, 1, ±1/2.
- 15.According to the selection rule, when a photon is emitted or absorbed, transitions can only occur between state with values of l that differ by
- A.
Four units.
- B.
Three units.
- C.
Two units.
- D.
One unit.
- 16.The number of electrons in a neutral atom is called its
- A.
Principal quantum number.
- B.
Orbital quantum number.
- C.
Magnetic quantum number.
- D.
Atomic number.
- 17.In terms of an atom's electron configuration, the letters K, L, M, and N refer to
- A.
Different shells with n equal to 1, 2, 3, or 4 respectively.
- B.
Different sub shells with l equal to 1, 2, 3, or 4 respectively.
- C.
The four possible levels for the magnetic quantum number.
- D.
The four possible quantum numbers.
- 18.What is the maximum number of electrons that can occupy the g sub shell?
- A.
10
- B.
14
- C.
18
- D.
22
- 19.How many possible sets of quantum numbers or electron states are there in the 5f sub shell?
- A.
2
- B.
8
- C.
10
- D.
14
- 20.The elements in the periodic table that have completely filled shells or subshells are referred to as
- A.
Noble gases.
- B.
Halogens.
- C.
Alkali metals.
- D.
Transition elements.
- 21.The elements in the periodic table which lack one electron from a filled shell are referred to as
- A.
Noble gases.
- B.
Halogens.
- C.
Alkali metals.
- D.
Transition elements.
- 22.The elements in the periodic table which have a single outer s electron are referred to as
- A.
Noble gases.
- B.
Halogens.
- C.
Alkali metals.
- D.
Transition elements.
- 23.The word LASER is an acronym for
- A.
Light Altered Spectra of Energy Radiated.
- B.
Latent Source of Enhanced Radiation.
- C.
Light Amplification by the Stimulated Emission of Radiation.
- D.
Light Absorbed States of Energetic Resonance.
- 24.In order to produce a hologram, one needs, in addition to an object and a piece of photographic film,
- A.
A beam of monochromatic light and a mirror.
- B.
A beam of monochromatic light and a lens.
- C.
A beam of coherent light and a lens.
- D.
A beam of coherent light and a mirror.
- 25.When a hologram is illuminated with a beam of coherent light, it produces
- A.
Both a real and a virtual image.
- B.
Only a real image of the object.
- C.
Only a virtual image of the object.
- D.
None of the given answers
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