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Atomic orbitals that have the same amount of energy are ________.


A) regenerative
B) negatively charged
C) degenerate
D) positively charged
E) zwitterionic

F) B) and E)
G) B) and C)

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The frequency of a photon is inversely proportional to the wavelength of the radiation.

A) True
B) False

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De Broglie explained electron movements by relating them to


A) waves only.
B) particles only.
C) waves and particles.
D) None of these choices.

E) All of the above
F) A) and C)

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The electronic structure 1s22s22p63s23p64s23d8 refers to the ground state of


A) Kr.
B) Ni.
C) Fe.
D) Pd.
E) None of these choices is correct.

F) A) and B)
G) A) and C)

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A(n) ________ is a point at which a standing wave has zero amplitude.


A) crevice
B) node
C) pit
D) burrow
E) orbital

F) None of the above
G) B) and C)

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Calculate the frequency of visible light having a wavelength of 686 nm. (c = 3.00 × 108 m/s)


A) 4.37 × 1014 s-1
B) 4.34 × 105 s-1
C) 6.17 × 1014 s-1
D) 2.29 × 10-15 s-1
E) 2.29 × 10-6 s-1

F) B) and D)
G) C) and D)

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The electron configuration of a ground-state Co atom is


A) [Ar]4s23d7.
B) 1s22s22p63s23d9.
C) [Ne]3s23d7.
D) [Ar]4s13d5.
E) [Ar]4s24d7.

F) B) and E)
G) A) and E)

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Why do we only see four lines in the emission spectrum of hydrogen?

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Only four of the ele...

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The energy of an electron in the hydrogen atom is determined by


A) the principal quantum number (n) only.
B) the angular momentum quantum number (l) only.
C) the principal and angular momentum quantum numbers (n & l) .
D) the principal and magnetic quantum numbers (n & ml) .
E) the principal, angular momentum, and magnetic quantum numbers.

F) B) and D)
G) B) and C)

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If the energy of a photon is 1.32 × 10-18 J, what is its wavelength in nm (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s) ?


A) 1.51 × 10-7 nm
B) 151 nm
C) 1.99 × 1015 nm
D) 1.99 × 1024 nm
E) None of these choices is correct.

F) A) and B)
G) None of the above

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What is defined as the distance between identical points on successive waves?


A) frequency
B) amplitude
C) magnitude
D) wavelength
E) light

F) A) and E)
G) C) and E)

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The word ________ is used as an acronym for the amplification of light which is stimulated by the emission of radiation.


A) beam
B) laser
C) emit
D) brighten
E) light

F) B) and E)
G) C) and D)

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What is the frequency of light having a wavelength of 360 nm? (c = 3.00 x 108 m/s)


A) 8.3 × 1014 s-1
B) 1.2 × 10-6 s-1
C) 8.3 × 105 s-1
D) 108 s-1
E) 1.2 × 10-15 s-1

F) C) and D)
G) B) and E)

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In the ________, electrons are ejected from the surface of a metal exposed to light of a certain minimum frequency.


A) aura effect
B) photon effect
C) ritzwald effect
D) photoelectric effect
E) None of the answers is correct.

F) A) and B)
G) A) and C)

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The shape of an atomic orbital is associated with


A) the principal quantum number (n) .
B) the angular momentum quantum number (l) .
C) the magnetic quantum number (ml) .
D) the spin quantum number (ms) .
E) the magnetic and spin quantum numbers, together.

F) None of the above
G) A) and C)

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What element is represented by the electron configuration 1s22s22p63s23p64s13d5?


A) Mn
B) Ca
C) K
D) Cr
E) V

F) B) and D)
G) B) and C)

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A neutral atom in its ground state contains 28 electrons. This element is considered a ________ element, and has ________ electrons in orbitals with l = 2.


A) main group, 8
B) actinide, 10
C) main group, 10
D) transition, 10
E) transition, 8

F) B) and E)
G) None of the above

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How many electrons are in the 4d orbitals of Tc?


A) 1
B) 2
C) 3
D) 4
E) 5

F) B) and D)
G) All of the above

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The principal quantum number designates the size of the orbital.

A) True
B) False

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What is the electron configuration for silicon?


A) 1s22s22p63s13p3
B) 1s22s22p63s23p2
C) 1s22s22p63s4
D) 1s22s22p63p4
E) 1s22s22p63s23p3

F) All of the above
G) C) and E)

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