Question 1

The spheres below represent atoms of Sb,As,P,and N (not necessarily in that order). 
-Which one of these spheres represents an atom of P?

Accepted Answer

A) sphere (a) 
B) sphere (b) 
C) sphere (c) 
D) sphere (d)

Question 2

-Wave (a)has the

Accepted Answer

A) longer wavelength and higher frequency than wave (b). 
B) longer wavelength and lower frequency than wave (b). 
C) shorter wavelength and higher frequency than wave (b). 
D) shorter wavelength and lower frequency than wave (b).

Question 3

Molecular vibrational energy transitions are observed in the infrared,molecular rotational transitions in the microwave,and electronic transitions in the ultraviolet-visible range.Which transitions require the most energy and which the least energy?

Accepted Answer

A) Electronic transitions require the least energy and vibrational transitions the most. 
B) Rotational transitions require the least energy and electronic transitions the most. 
C) Vibrational transitions require the least energy and electronic transitions the most. 
D) Vibrational transitions require the least energy and rotational transitions the most.

Question 4

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

Accepted Answer

A) ns1 
B) ns2 
C) 1s22s1 
D) 1s22s2

Question 5

For the fourth-shell orbital shown below,what are the principal quantum number,n,and the angular momentum quantum number,l?

Accepted Answer

A) n = 4 and l = 0 
B) n = 4 and l = 1 
C) n = 4 and l = 2 
D) n = 4 and l = 3

Question 6

A baseball with a mass of 150 g is moving at a velocity of 40 m/s (90 mph).If the uncertainty in the velocity is 0.1 m/s,the uncertainty in position

Accepted Answer

A) may be zero. 
B) must be less than or equal to 4 × 10-33 m. 
C) must be 4 × 10-33 m. 
D) must be greater than or equal to 4 × 10-33 m.

Question 7

The wave characteristics of a large,moving object,such as an automobile,are difficult to observe because the

Accepted Answer

A) energy is not quantized. 
B) energy is quantized,but the spacing between energy levels is small. 
C) wavelength is very large. 
D) wavelength is very small.

Question 8

Within a given shell of a multielectron atom,the lower l for an orbital,the

Accepted Answer

A) higher the orbital energy and the higher Zeff for the electron. 
B) higher the orbital energy and the lower Zeff for the electron. 
C) lower the orbital energy and the higher Zeff for the electron. 
D) lower the orbital energy and the lower Zeff for the electron.

Question 9

Which orbital-filling diagram violates the Pauli exclusion principle?

Accepted Answer

A)   
B)   
C)   
D)

Question 10

What is the frequency of a helium-neon laser light with a wavelength of 632.8 nm? The speed of light is 3.00 × 108 m/s.

Accepted Answer

A) 4)74 × 1014 s-1 
B) 4)74 × 105 s-1 
C) 2)11 × 10-15 s-1 
D) 1)58 × 10-15 s-1

Question 11

Arrange the following spectral regions in order of increasing energy:
Infrared,microwave,ultraviolet,visible.

Accepted Answer

A) microwave < infrared < visible < ultraviolet 
B) microwave < visible < infrared < ultraviolet 
C) ultraviolet < infrared < visible < microwave 
D) ultraviolet < visible < infrared < microwave

Question 12

Which orbital-filling diagram violates Hund's rule?

Accepted Answer

A)   
B)   
C)   
D)

Question 13

Which of the following is not true?

Accepted Answer

A) All moving objects have wave characteristics. 
B) For objects moving at a given speed,the larger the mass,the shorter the wavelength. 
C) The de Broglie relation and the Heisenberg uncertainty principle apply only to small particles. 
D) The Heisenberg uncertainty principle is an inequality.

Question 14

The absorption of a photon of wavelength 4.67 × 10-6 m is necessary for a CO molecule to pass from the lowest vibrational energy level to the next highest vibrational level.If this higher vibrational level has an energy of 6.41 × 10-20 J,what is the energy of the lowest vibrational level?
H = 6.626 × 10-34 J ∙ s

Accepted Answer

A) 1)60 × 10-20 J 
B) 2)15 × 10-20 J 
C) 3)20 × 10-20 J 
D) 4)26 × 10-20 J

Question 15

Which atom in each group (I and II)has the smallest atomic radius?
(I)Ba,Hf,At (II)As,Sb,Bi

Accepted Answer

A) Ba;As 
B) Ba;Bi 
C) At;As 
D) At;Bi

Question 16

For a hydrogen atom,which electronic transition would result in the emission of a photon with the highest energy?

Accepted Answer

A) 2s → 3p 
B) 2p → 6d 
C) 4p → 2s 
D) 5f → 3d

Question 17

How many valence electrons does a neutral tellurium atom have?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 52

Question 18

What is the ground-state electron configuration of Co?

Accepted Answer

A) [Ar]3d9 
B) [Ar]4s13d8 
C) [Ar]4s23d7 
D) [Ar]4s24p64d1

Question 19

The first vibrational level for NaH lies at 1.154 × 10-20 J and the second vibrational level lies at 3.406 × 10-20 J.What is the frequency of the photon emitted when a molecule of NaH drops from the second vibrational level to the first vibrational level?

Accepted Answer

A) 1)742 × 1013 Hz 
B) 3)399 × 1013 Hz 
C) 5)140 × 1013 Hz 
D) 6)882 × 1013 Hz

Question 20

The element In has how many valence electrons?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 13

Exam 5: Periodicity and the Atomic Structure of Atoms

The spheres below represent atoms of Sb,As,P,and N (not necessarily in that order) . -Which one of these spheres represents an atom of P?

-Wave (a) has the