Unit 2 Exam Review CHM 111
Chapter 2
1. The energy of a photon of light is proportional to its frequency and
proportional to its wavelength.
A. directly, directly
B. inversely, inversely
C. inversely, directly
D. directly, inversely
E. indirectly, not
2. What color of visible light has the longest wavelength?
A. blue
B. violet
C. red
D. yellow
E. green
3. What is the frequency of light (s-1 ) that has a wavelength of 1.23 X 10 -6 cm ?
A. 3.69
B. 2.44 X 10 16
C. 4.10 X 10 12
D. 1.04 X 10-13
4. The energy of a photon that has a wavelength of 13.2 nm is J.
A. 9.55 X 10-25
B. 1.62 X 10-17
C. 1.99 X 10-25
D. 1.51 X 10-17
5. A mole of yellow photons of wavelength 527 nm has kJ of energy.
A. 165
B. 227
C. 2.74 X 10-19
D. 4.56 X 10-46
E. 6.05 X 10-3
6. It takes 254 kJ/mol to eject electrons from a certain metal surface. What is the longest
wavelength of light (nm) that can be used to eject electrons from the surface of this metal via
the photoelectric effect ?
A. 472 B. 233 C. 165 D. 725 E. 552
7. What is the de Broglie wavelength (m) of a 2.0 kg object moving at a speed of 50 m/s?
A. 6.6 X 10 -36
B. 1.5 X 10 35
C. 5.3 X 10 -33
D. 2.6 X 10 -35
E. 3.8 X 10 34
8. At maximum, an f-subshell can hold electrons, a d-subshell can hold
electrons, and a p-subshell can hold electrons.
A. 2, 8, 6
B. 14, 10, 6
C. 2, 8, 18
D. 2, 12, 21
E. 14, 6, 10
9. The quantum number defines the shape of an orbital.
A. spin
B. magnetic
C. principal
D. azimuthal
E. psi
10. The principal quantum number for the outermost electrons in a Br atom in the ground state is
__________.
A. 1
B. 2
C. 3
D. 4
E. 0
11. Which one of the quantum numbers does not result from the solution of the Schroedinger
equation?
A. spin
B. magnetic
C. principal
D. azimuthal
E. angular momentum
Chapter 3
1. The element that corresponds to the electron configuration1s22s2 2p6 3s2 3p 6 4s1 3d5 is
A. Titanium
B. Chromium
C. Vanadium
D. Manganese
E. Iron
2. Give the complete electronic configuration for Mn.
A. 1s2 2s2 2p 6 3s23p 6 4s2 4d5
B. 1s2 2s2 2p 6 3s23p 6 4s1 3d6
C. 1s2 2s2 2p 6 3s23p 6 4s2 3d5
D. 1s2 2s2 2p 6 3s23p 6 4s2 4p5
3. Choose the ground state electron configuration for Zn 2+
A. [Ar]4s23d 8
B. [Ar]3d 10
C. [Ar]4s23d 6
D. [Ar]
E. [Ar]3d 8
4. How many valence electrons do the halogens possess?
A. 5
B. 7
C. 6
D. 8
E. 1
5. Place the following in order of increasing atomic radius: As O Br
A. As < Br < O
B. O < As < Br
C. Br < As < O
D. As < O < Br
E. O < Br < As
6. Place the following in order of increasing IE. K Ca Rb
A. Ca < K < Rb
B. Rb < Ca < K
C. Ca < Rb < K
D. Rb < K < Ca
E. K < Ca < Rb 7. Which element is NOT paramagnetic? A. Li B. F C. Rb D. V E. Zn 8. Give the number of electrons in Na +1 . A. 10 B. 13 C. 9 D. 11 E. 12 9. Predict the charge of the most stable ion of magnesium. A. 3+ B. 1- C. 1+ D. 2- E. 2+ 10. Electrons add to orbitals from lowest to highest energy is known as the A. Pauli exclusion principle. B. Hund’s rule. C. Aufbau principle. D. Heisenberg uncertainty principle. 11. Which electron configuration represents a violation of the Aufbau principle? 12. No two electrons can have the same four quantum numbers is known as the A. Pauli exclusion principle. B. Hund’s rule. C. Aufbau principle. D. Heisenberg uncertainty principle. A) B) C) D) E) 13. Which electron configuration represents a violation of the Pauli exclusion principle? 14. When filling degenerate orbitals, electrons fill them singly first, with parallel spins is known as A. Pauli exclusion principle. B. Hund’s rule. C. Aufbau principle. D. Heisenberg uncertainty principle. 15. Which electron configuration represents a violation of Hund’s Rule? 16. Which element on the Periodic Table has the highest electronegativity? A. Francium B. Radon C. Fluorine D. Helium E. Hydrogen 17. Repulsions that cause a net reduction in the attraction of electrons to the nucleus. A. core B. valence C. effective nuclear charge D. shielding E. electron affinity A) B) C) D) E) A) B) C) D) E) 18. The Outer transition metals form the A. f-block B. d-block C. p-block D. s-block E. solitary confinement 19. Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) Mg > Na > P > Si > Ar
B) Ar > Si > P > Na > Mg
C) Si > P > Ar > Na > Mg
D) Na > Mg > Si > P > Ar
E) Ar > P > Si > Mg > Na
20. Of the following atoms, which has the largest first ionization energy?
A) Br
B) O
C) C
D) P
E) I
