Question 1

Atoms of which element,indicated by letter on the periodic table,have the orbital-filling diagram shown below?

Accepted Answer

A) B 
B) C 
C) D 
D) None of the above. 
A) B 
B) C 
C) D 
D) None of the above. D

Question 2

An oxygen molecule has a mass of 5.3 × 10-26 kg and an approximate diameter of 3.6 × 10-10 m.If the molecule is moving at 400 m/s (1000 mph)with an uncertainty in velocity of 1 m/s,the uncertainty in position

Accepted Answer

A) is less than or equal to 5 × 10-26 m. 
B) must be equal to 5 × 10-26 m. 
C) must be equal to 1 × 10-9 m. 
D) is greater than or equal to 1 × 10-9 m. 
A) is less than or equal to 5 × 10-26 m. 
B) must be equal to 5 × 10-26 m. 
C) must be equal to 1 × 10-9 m. 
D) is greater than or equal to 1 × 10-9 m. D

Question 3

The number of orbitals in the n = 3 shell is ________.

Accepted Answer

9

Question 4

-Which grouping of elements,indicated by letter on the periodic table above,represents the f-block elements?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 5

The first vibrational level for NaH lies at 1.154 × 10-20 J and the second vibrational level lies at   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 
A) 1.742 × 1013 Hz 
B) 3.399 × 1013 Hz 
C) 5.140 × 1013 Hz 
D) 6.882 × 1013 Hz

Question 6

How many subshells are there in the shell with n = 4?

Accepted Answer

A) 3 
B) 4 
C) 6 
D) 18 
A) 3 
B) 4 
C) 6 
D) 18

Question 7

-Which element,indicated by letter on the periodic table above,contains one f electrons?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 8

What are the possible values of n and ml for an electron in a 6d orbital?

Accepted Answer

A) n = 1,2,3,4,or 5 and ml = 2 
B) n = 1,2,3,4,or 5 and ml = -2,-1,0,+1,or +2 
C) n = 6 and ml = 2 
D) n = 6 and ml = -2,-1,0,+1,or +2 
A) n = 1,2,3,4,or 5 and ml = 2 
B) n = 1,2,3,4,or 5 and ml = -2,-1,0,+1,or +2 
C) n = 6 and ml = 2 
D) n = 6 and ml = -2,-1,0,+1,or +2

Question 9

Which group of elements,indicated by letter on the periodic table,has electrons with the ground-state valence-shell electron configuration ns2 np4?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 10

For an electron in a given atom,the larger n,the

Accepted Answer

A) larger the average distance from the nucleus and the higher the orbital energy. 
B) larger the average distance from the nucleus and the lower the orbital energy. 
C) smaller the average distance from the nucleus and the higher the orbital energy. 
D) smaller the average distance from the nucleus and the lower the orbital energy. 
A) larger the average distance from the nucleus and the higher the orbital energy. 
B) larger the average distance from the nucleus and the lower the orbital energy. 
C) smaller the average distance from the nucleus and the higher the orbital energy. 
D) smaller the average distance from the nucleus and the lower the orbital energy.

Question 11

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. 
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 12

The spheres below represent atoms of Li,Be,B,and F (not necessarily in that order).  
-Which one of these spheres represents an atom of Be?

Accepted Answer

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

Question 13

An old copper penny has a mass 3 × 1022 times that of a copper atom.Compare the de Broglie wavelength of a penny moving at 0.5 m/s to that of a copper atom moving 104 times as fast.The wavelength for the

Accepted Answer

A) copper atom is 3 × 1018 times that of the penny. 
B) copper atom is 3 × 1026 times that of the penny. 
C) penny is 3 × 1018 times that of the copper atom. 
D) penny is 3 × 1026 times that of the copper atom. 
A) copper atom is 3 × 1018 times that of the penny. 
B) copper atom is 3 × 1026 times that of the penny. 
C) penny is 3 × 1018 times that of the copper atom. 
D) penny is 3 × 1026 times that of the copper atom.

Question 14

The property of a wave that is associated with brightness or intensity is ________.

Accepted Answer

The answer of The property of a wave that is...

Question 15

For a multielectron atom,a 3s orbital lies lower in energy than a 3p orbital because

Accepted Answer

A) a 3p orbital has more nodal surfaces than a 3s orbital. 
B) other electrons more effectively shield electrons in the 3s orbital from the nucleus. 
C) other electrons more effectively shield electrons in the 3p orbital from the nucleus. 
D) there are more p orbitals than s orbitals in a given shell. 
A) a 3p orbital has more nodal surfaces than a 3s orbital. 
B) other electrons more effectively shield electrons in the 3s orbital from the nucleus. 
C) other electrons more effectively shield electrons in the 3p orbital from the nucleus. 
D) there are more p orbitals than s orbitals in a given shell.

Question 16

Which groups of elements,indicated by letter on the periodic table,have two unpaired p electrons in their valence shell?

Accepted Answer

A) A and B 
B) A and C 
C) B and C 
D) B and D 
A) A and B 
B) A and C 
C) B and C 
D) B and D

Question 17

A quantized variable

Accepted Answer

A) can be continuously varied. 
B) can only assume certain values. 
C) consists of photons. 
D) is extremely small. 
A) can be continuously varied. 
B) can only assume certain values. 
C) consists of photons. 
D) is extremely small.

Question 18

-Which grouping of elements,indicated by letter on the periodic table above,represents the d-block elements?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 19

Which of the following represent electron configurations that violate the Pauli exclusion principle? (A)[Ne]3s13p5 (B)[Kr]4d125s25p6 (C)[Ar]3d104s24p2

Accepted Answer

A) only (
A)  
B) only (
B)  
C) (
A) and (
B)  
D) (
B) and (
C)  
A) only (
A)  
B) only (
B)  
C) (
A) and (
B)  
D) (
B) and (
C)

Question 20

The subshell designations follow the alphabet after f.What is the first shell in which an h orbital would be allowed?

Accepted Answer

A) fifth 
B) sixth 
C) seventh 
D) eighth 
A) fifth 
B) sixth 
C) seventh 
D) eighth

Exam 5: Periodicity and the Electronic Structure of Atoms

Atoms of which element,indicated by letter on the periodic table,have the orbital-filling diagram shown below?

An oxygen molecule has a mass of 5.3 × 10-26 kg and an approximate diameter of 3.6 × 10-10 m.If the molecule is moving at 400 m/s (1000 mph)with an uncertainty in velocity of 1 m/s,the uncertainty in position

The number of orbitals in the n = 3 shell is ________.

-Which grouping of elements,indicated by letter on the periodic table above,represents the f-block elements?

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

How many subshells are there in the shell with n = 4?

-Which element,indicated by letter on the periodic table above,contains one f electrons?

What are the possible values of n and ml for an electron in a 6d orbital?

Which group of elements,indicated by letter on the periodic table,has electrons with the ground-state valence-shell electron configuration ns2 np4?

For an electron in a given atom,the larger n,the

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

The spheres below represent atoms of Li,Be,B,and F (not necessarily in that order). -Which one of these spheres represents an atom of Be?

An old copper penny has a mass 3 × 1022 times that of a copper atom.Compare the de Broglie wavelength of a penny moving at 0.5 m/s to that of a copper atom moving 104 times as fast.The wavelength for the

The property of a wave that is associated with brightness or intensity is ________.

For a multielectron atom,a 3s orbital lies lower in energy than a 3p orbital because

Which groups of elements,indicated by letter on the periodic table,have two unpaired p electrons in their valence shell?

A quantized variable

-Which grouping of elements,indicated by letter on the periodic table above,represents the d-block elements?

Which of the following represent electron configurations that violate the Pauli exclusion principle? (A)[Ne]3s13p5 (B)[Kr]4d125s25p6 (C)[Ar]3d104s24p2

The subshell designations follow the alphabet after f.What is the first shell in which an h orbital would be allowed?

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An oxygen molecule has a mass of 5.3 × 10^-26 kg and an approximate diameter of 3.6 × 10^-10 m.If the molecule is moving at 400 m/s (1000 mph)with an uncertainty in velocity of 1 m/s,the uncertainty in position

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

What are the possible values of n and m_l for an electron in a 6d orbital?

Which group of elements,indicated by letter on the periodic table,has electrons with the ground-state valence-shell electron configuration ns² np⁴?

An old copper penny has a mass 3 × 10²² times that of a copper atom.Compare the de Broglie wavelength of a penny moving at 0.5 m/s to that of a copper atom moving 10⁴ times as fast.The wavelength for the

Which of the following represent electron configurations that violate the Pauli exclusion principle? (A)[Ne]3s¹3p⁵ (B)[Kr]4d¹²5s²5p⁶ (C)[Ar]3d¹⁰4s²4p²