Chemistry 266 Study

1. 1Which one of the following is correct?

   1. AA) λ = c
   2. BB) νλ = c
   3. CC) ν + λ
   4. DD) ν = cλ
   5. EE) ν ÷ λ = c
2. 2The photoelectric effect is __________.

   1. AA) the darkening of photographic film when exposed to an electric field
   2. BB) the production of current by silicon solar cells when exposed to sunlight
   3. CC) the ejection of electrons by a metal when struck with light of sufficient energy
   4. DD) the total reflection of light by metals giving them their typical luster
   5. EE) a relativistic effect
3. 3In the Bohr model of the atom, __________.

   1. AA) electrons travel in circular paths called orbitals
   2. BB) electrons can have any energy
   3. CC) electron paths are controlled by probability
   4. DD) electron energies are quantized
   5. EE) both A and C
4. 4According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron.

   1. AA) momentum
   2. BB) mass
   3. CC) shape
   4. DD) velocity
   5. EE) color
5. 5Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

   1. AA) 2p
   2. BB) 2s
   3. CC) 2d
   4. DD) all of the above
   5. EE) none of the above
6. 6Which one of the quantum numbers does not result from the solution of the Schroedinger equation?
   

   1. AA) spin
   2. BB) angular momentum
   3. CC) azimuthal
   4. DD) magnetic
   5. EE) principal
7. 7In a px orbital, the subscript x denotes the __________ of the electron.
   

   1. AA) axis along which the orbital is aligned
   2. BB) probability of the shell
   3. CC) energy
   4. DD) size of the orbital
   5. EE) spin of the electrons
8. 8Which one of the following represents an acceptable set of quantum numbers for an electron in an atom? (arranged as n, l, ml, and ms)
   A) 3, 3, 3, -1/2
   B) 3, 3, 3, 1/2
   C) 5, 4,- 5, 1/2
   D) 2, 2, -1, -1/2
   E) 1, 0, 0, 1/2

   1. AA) 3, 3, 3, -1/2
   2. BB) 3, 3, 3, 1/2
   3. CC) 5, 4,- 5, 1/2
   4. DD) 2, 2, -1, -1/2
   5. EE) 1, 0, 0, 1/2
9. 9Which electron configuration represents a violation of the Pauli exclusion principle?

   

   1. AA)
   2. BB)
   3. CC)
   4. DD)
   5. EE)
10. 10Which one of the following is the correct electron configuration for a ground-state nitrogen atom?

    

    1. AA)
    2. BB)
    3. CC)
    4. DD)

11. 11The ground state electron configuration of Ga is __________.

    1. AA) 1s22s22p63s23p63d104s24p1
    2. BB) [Ar]4s23d11
    3. CC) 1s22s23s23p63d104s24p1
    4. DD) 1s22s22p63s23p63d104s24d1
    5. EE) 1s22s22p63s23p64s24d104p1
12. 12The ground-state electron configuration of __________ is [Ar]4s13d5.
    A) K B) Cr C) Mn D) Fe E) V
    

    1. AA) K
    2. BB) Cr
    3. CC) Mn
    4. DD) Fe
    5. EE) V
13. 13Which electron configuration represents a violation of Hund's rule for an atom in its ground state?

    

    1. AA)
    2. BB)
    3. CC)
    4. DD)
    5. EE)
14. 14Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar?

    1. AA) Si > P > Ar > Na > Mg
    2. BB) Ar > P > Si > Mg > Na
    3. CC) Mg > Na > P > Si > Ar
    4. DD) Ar > Si > P > Na > Mg
    5. EE) Na > Mg > Si > P > Ar
15. 15Of the following atoms, which has the largest first ionization energy?

    1. AA) I
    2. BB) Br
    3. CC) P
    4. DD) O
    5. EE) C
16. 16Which equation correctly represents the first ionization of aluminum?

    1. AA) Al (g) → Al- (g) + e
    2. BB) Al (g) → Al+ (g) + e
    3. CC) Al+ (g) + e- → Al (g)
    4. DD) Al (g) + e- → Al- (g)
    5. EE) Al- (g) → Al (g) + e
17. 17Which ion below has the largest radius?

    1. AA) Cl-
    2. BB) F-
    3. CC) K+
    4. DD) Na+
    5. EE) Br
18. 18Which of the following is an isoelectronic series?

    1. AA) S, Cl, Ar, K
    2. BB) F-, Cl-, Br-, I
    3. CC) Si2-, P2-, S2-, Cl2-
    4. DD) B5-, Si4-, As3-, Te2-
    5. EE) O2-, P3-, Ne, Na+
19. 19Of the following elements, __________ has the most negative electron affinity.

    1. AA) I
    2. BB) Se
    3. CC) Br
    4. DD) S
    5. EE) Cl
20. 20Of the ions below, only __________ has a noble gas electron configuration.

    1. AA) S3-
    2. BB) K-
    3. CC) Cl-
    4. DD) O2+
    5. EE) I+
21. 21Which energy change corresponds to the electron affinity of fluorine?

    

    1. AA) 4
    2. BB) 6
    3. CC) 5
    4. DD) 2
    5. EE) 1
22. 22In which of the molecules below is the carbon-carbon distance the shortest?

    1. AA) H2C=C=CH2
    2. BB) H-C≡C-H
    3. CC) H3C-CH2-CH3
    4. DD) H3C-CH3
    5. EE) H2C=CH2
23. 23Of the atoms below, __________ is the most electronegative.
    A) N B) Cl C) Br D) F E) O

    1. AA) N
    2. BB) Cl
    3. CC) Br
    4. DD) F
    5. EE) O
24. 24Which of the following is the correct Lewis symbol for Br-?

    

    1. AA)
    2. BB)
    3. CC)
    4. DD)
    5. EE)
25. 25Which is the best Lewis structure for COCl2? (Formal charges are not shown.)

    

    1. AA)
    2. BB)
    3. CC)
    4. DD)
    5. EE)
26. 26Which is the best Lewis structure for CO

    

    1. AA)
    2. BB)
    3. CC)
    4. DD)
    5. EE)

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Test sobre Chemistry 266 Study, creado por Maryssa Akers el 02/04/2019.

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Maryssa Akers

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