CHEM 1007-Spring2025 Take home Quiz 6

Chapter 6

  • Question 1: An FM radio station broadcasts electromagnetic radiation at a frequency of 100.6 MHz. The wavelength of this radiation is __ m.

  • Question 2: Electromagnetic radiation with a wavelength of 525 nm appears as green light to the human eye. The frequency of this light is __ .

  • Question 3: The energy of a photon of light is __proportional to its frequency and __proportional to its wavelength.

    • A) inversely, inversely
    • B) directly, directly
    • C) directly, inversely
    • D) inversely, directly

  • Question 4: Of the following, __ radiation has the longest wavelength.

    • A) X-ray
    • B) radio
    • C) microwave
    • D) ultraviolet
    • E) -ray

  • Question 5: The wavelength of a photon of energy 5.25 × 10^{-19} J is __m.

  • Question 6: The energy of one mole of photons that have a wavelength of 9.0 m is __J.

  • Question 7: The n =3 to n = 5 transition in the Bohr hydrogen atom corresponds to the of a photon with a wavelength of nm.

    • A) emission, 1282
    • B) absorption, 657
    • C) absorption, 1380
    • D) emission, 657
    • E) absorption, 1282

  • Question 8: Which of the following is an isoelectronic series?

    • A) B5 -, Si4 -, As3 -, Te2 -
    • B) O2 -, F-, Ne, Na+
    • C) F-, Cl-, Br-, I-
    • D) S, Cl, Ar, K
    • E) Si2 -, P2 -, S2 -, Cl2 -

  • Question 9: All of the orbitals in a given subshell have the same value(s) of the quantum number(s).

    • A) principal (n)
    • B) angular momentum (l)
    • C) magnetic (ml)
    • D) A and B
    • E) B and C

  • Question 10: An electron cannot have the quantum numbers n = , l = , ml = .

    • A) 2, 0, 0, -½
    • B) 2, 1, -1, ½
    • C) 3, 1, -1, ½
    • D) 1, 1, 1, -½
    • E) 3, 2, 1, -½

  • Question 11: Which one of the following is an incorrect subshell notation?

    • A) 4f
    • B) 3p
    • C) 3s
    • D) 2p
    • E) 3f

  • Question 12: How many electrons can be "stored" in a completely filled 4f sublevel?

    • A) 7
    • B) 10
    • C) 14
    • D) 28
    • E) 6

  • Question 13: Which set of the quantum numbers (n, l, ml, ms) corresponds to an electron in a 3d orbital?

    • A) 3, 2, 2, -½
    • B) 3, 3, 2, ½
    • C) 3, 2, 3, ½
    • D) 2, 1, 0, -½

  • Question 14: The complete electron configuration of vanadium is .

    • A) 1s22s22p103s23p7
    • B) 1s22s22p63s23p63d34s2
    • C) 1s42s42p63s43p5
    • D) 1s42s42p103s43p1
    • E) 1s42s42p83s43p3

  • Question 15: Of the following transitions in the Bohr hydrogen atom, the transition results in the emission of the lowest-energy photon.

    • A) n = 1 → n = 6
    • B) n = 6 → n = 1
    • C) n = 6 → n = 3
    • D) n = 3 → n = 6
    • E) n = 1 → n = 4

  • Question 16: The shorthand (condensed) electron configuration for a boron atom is .

    • A) 1s22s22p6
    • B) [Ne]2s22p1
    • C) 1s22s22p1
    • D) [H]2s22p1
    • E) [He]2s22p1

  • Question 17: Which of the following cations will have the electronic configuration 1s22s22p63s23p6?

    • A) Co2+
    • B) Ca2+
    • C) Sc+
    • D) Na+
    • D) Cl+

  • Question 18: Which electron configuration represents a violation of the Pauli exclusion principle?

  • Question 19: What is the electron configuration for aluminum?

    • A) 1s 2 2s 2 2p 3 3s 3
    • B) 1s 2 2s 2 2p 3 3s 3
    • C) 1s 2 2s 2 2p 3 3s 3
    • D) 1s 2 2s 2 2p 3 3s 3
    • E) 1s 2 2s 2 2p 3 3s 3

  • Question 20: The frequency of electromagnetic radiation required to promote an electron from n = 2 to n = 4 in a Bohr hydrogen atom is Hz.

    • A) 4.13 × 10^{-19}
    • B) 6.17 × 10^{14}
    • C) 5.46 × 10^{-19}
    • D) 8.22 × 10^{14}
    • E) 4.13 × 10^{19}

  • Question 21: When the electron in a hydrogen atom moves from n = 6 to n = 1, light with a wavelength of nm is emitted.

    • A) 487
    • B) 411
    • C) 434
    • D) 93.8
    • E) 657

  • Question 22: Which is the correct electron configuration for an oxide ion?

    • A) 1s22s22p3
    • B) 1s22s22p1
    • C) 1s22s22p6
    • D) 1s22s23s2
    • E) 1s22s22p2

Chapter 8

  • Question 23: All of the following are ionic compounds except __.

    • A) K2O
    • B) Na2SO4
    • C) Li3N
    • D) NaCl
    • E) CO2

  • Question 24: In which of the molecules below is the carbon-carbon distance the shortest?

    • A) H2C CH2
    • B) H-C≡C-H
    • C) H3C—CH3
    • D) H2C C CH2
    • E) H3C—CH2—CH3

  • Question 25: Which of the following has the bonds correctly arranged in order of increasing polarity?

    • A) Be—F, Mg—F, N—F, O—F
    • B) O—F, N—F, Be—F, Mg—F
    • C) O—F, Be—F, Mg—F, N—F
    • D) N—F, Be—F, Mg—F, O—F
    • E) Mg—F, Be—F, N—F, O—F

  • Question 26: Which of the following structure is the best Lewis structure for the thiocyanate ion (NCS-):

    • (i)
    • (ii)
    • (iii)
    • A) Structure (i)
    • B) Structure (ii)
    • C) Structure (iii)
    • D) All of the above are of equal contribution toward the actual structure of the NCS- ion.
    • E) None of the above

  • Question 27: Which of the following does not have eight valence electrons?

    • A) Cl-
    • B) Xe
    • C) Ti+4
    • D) Rb+
    • E) Sr+

  • Question 28: The central atom in does not violate the octet rule.

    • A) SF4
    • B) KrF2
    • C) CF4
    • D) XeF4
    • E) ICl4-

  • Question 29: The ion ICl4- has valence electrons.

    • A) 34
    • B) 35
    • C) 36
    • D) 28
    • E) 8

  • Question 30: There are paired and unpaired electrons in the Lewis symbol for a sulfur atom.

    • A) 4, 2
    • B) 2, 4
    • C) 2, 3
    • D) 4, 4
    • E) 2, 2