Question 1

Which of the following statements regarding orbital diagrams is correct?

Accepted Answer

A) The 2p sublevel has two orbitals. 
B) The 4p sublevel has four orbitals. 
C) Four electrons can be placed in each orbital. 
D) All of the electrons in a given orbital must have the same spin. 
E) Electrons will fill a given sublevel in a way that gives the maximum number of unpaired electrons. 
A) The 2p sublevel has two orbitals. 
B) The 4p sublevel has four orbitals. 
C) Four electrons can be placed in each orbital. 
D) All of the electrons in a given orbital must have the same spin. 
E) Electrons will fill a given sublevel in a way that gives the maximum number of unpaired electrons.

Question 2

The type of radiation with wavelengths just slightly longer than red light is infrared.

Accepted Answer

A) True 
 B)False

Question 3

There is one unpaired electron in a phosphorus atom.

Accepted Answer

A) True 
 B)False

Question 4

Rank the following elements in order of increasing atomic size: Ge, Rb, Ne, S

Accepted Answer

A) Ge < Rb < Ne < S 
B) Rb < S < Ne < Ge 
C) S < Ne < Ge < Rb 
D) Ne < S < Ge < Rb 
E) Rb <Ge < Ne < S 
A) Ge < Rb < Ne < S 
B) Rb < S < Ne < Ge 
C) S < Ne < Ge < Rb 
D) Ne < S < Ge < Rb 
E) Rb <Ge < Ne < S

Question 5

Which of the following statements regarding the Bohr model of the hydrogen atom is incorrect?

Accepted Answer

A) In Bohr's model, when 1 electron moves directly from the n = 5 to the n = 3 orbit, two photons are emitted. 
B) In Bohr's model, when 1 electron moves from the n = 5 to the n = 4 orbit and then from the n = 4 to the n = 3 orbit, two photons are emitted. 
C) In Bohr's model, the transition of an electron from the n = 4 to the n = 3 orbit would result in the emission of a lower energy photon than a transition from the n = 3 to the n = 2 orbit. 
D) In Bohr's model, the transition of an electron from the n = 4 to the n = 3 orbit would result in the emission of a longer wavelength photon than a transition from the n = 3 to the n = 2 orbit. 
E) In Bohr's model, the four colored lines in the hydrogen spectrum result from transitions of electrons from higher energy levels down to the n = 2 orbit. 
A) In Bohr's model, when 1 electron moves directly from the n = 5 to the n = 3 orbit, two photons are emitted. 
B) In Bohr's model, when 1 electron moves from the n = 5 to the n = 4 orbit and then from the n = 4 to the n = 3 orbit, two photons are emitted. 
C) In Bohr's model, the transition of an electron from the n = 4 to the n = 3 orbit would result in the emission of a lower energy photon than a transition from the n = 3 to the n = 2 orbit. 
D) In Bohr's model, the transition of an electron from the n = 4 to the n = 3 orbit would result in the emission of a longer wavelength photon than a transition from the n = 3 to the n = 2 orbit. 
E) In Bohr's model, the four colored lines in the hydrogen spectrum result from transitions of electrons from higher energy levels down to the n = 2 orbit.

Question 6

The color of visible light with the lowest energy is red.

Accepted Answer

A) True 
 B)False

Question 7

Select the pair that has the larger atom or ion listed first.

Accepted Answer

A) Ca2+, Ca 
B) Cl, Cl-  
C) Rb+, Sr2+  
D) Br-, Se2-  
E) Br, Br-  
A) Ca2+, Ca 
B) Cl, Cl-  
C) Rb+, Sr2+  
D) Br-, Se2-  
E) Br, Br-

Question 8

Which element has the abbreviated ground-state electron configuration [Ar]4s23d6?

Accepted Answer

A) Fe 
B) Co 
C) Se 
D) Mn 
A) Fe 
B) Co 
C) Se 
D) Mn

Question 9

A laser used in DVD players has a wavelength of 405 nm.What is the frequency of this light in hertz (s-1)?

Accepted Answer

A) 7.41 x 105 s-1  
B) 7.41 x 1014 s-1  
C) 1.35 x 10-6 s-1  
D) 1.35 x 10-13 s-1  
E) 1.22 x 102 s-1  
A) 7.41 x 105 s-1  
B) 7.41 x 1014 s-1  
C) 1.35 x 10-6 s-1  
D) 1.35 x 10-13 s-1  
E) 1.22 x 102 s-1

Question 10

Rank the following elements in order of increasing atomic size: Sr, He, Si, F

Accepted Answer

A) F < He < Sr < Si 
B) F < Sr < Si < He 
C) He < F < Si < Sr 
D) Sr < Si < F < He 
E) Si < Sr < F < He 
A) F < He < Sr < Si 
B) F < Sr < Si < He 
C) He < F < Si < Sr 
D) Sr < Si < F < He 
E) Si < Sr < F < He

Question 11

Which of the following is the correct ground state electron configuration for a magnesium atom?

Accepted Answer

A) 1s22s22p8  
B) 1s22s22p63s2  
C) 1s22s10  
D) 1s22s22p63s23p2  
E) 1s22s22p63s1  
A) 1s22s22p8  
B) 1s22s22p63s2  
C) 1s22s10  
D) 1s22s22p63s23p2  
E) 1s22s22p63s1

Question 12

The valence level and the number of valence electrons, respectively, for phosphorus are:

Accepted Answer

A) 2 and 3 
B) 2 and 5 
C) 3 and 3 
D) 3 and 5 
E) 3 and 6 
A) 2 and 3 
B) 2 and 5 
C) 3 and 3 
D) 3 and 5 
E) 3 and 6

Question 13

Sodium has a greater first ionization energy than cesium because sodium's valence electron is closer to the nucleus than cesium's valence electron.

Accepted Answer

A) True 
 B)False

Question 14

The maximum number of electrons in the 2nd principal energy level is 8.

Accepted Answer

A) True 
 B)False

Question 15

Which elements have a partially filled d sublevel in their ground-state electron configuration?

Accepted Answer

A) alkali metals 
B) alkaline earth metals 
C) halogens 
D) noble gases 
E) transition metals 
A) alkali metals 
B) alkaline earth metals 
C) halogens 
D) noble gases 
E) transition metals

Question 16

Which of the following is the correct orbital diagram for silicon?

Accepted Answer

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

Question 17

The green line observed in the line spectrum for hydrogen has a wavelength of 486 nm.What is the energy of a photon of this light?

Accepted Answer

A) 9.66 x 10-23 J 
B) 4.09 x 10-28 J 
C) 4.09 x 10-19 J 
D) 2.44 x 1018 J 
E) 2.44 x 1027 J 
A) 9.66 x 10-23 J 
B) 4.09 x 10-28 J 
C) 4.09 x 10-19 J 
D) 2.44 x 1018 J 
E) 2.44 x 1027 J

Question 18

The following orbital diagram corresponds to the element___________.

Accepted Answer

A) Br 
B) Cl 
C) P 
D) S 
E) Si 
A) Br 
B) Cl 
C) P 
D) S 
E) Si

Question 19

Which of the following statements regarding valence electrons is incorrect?

Accepted Answer

A) The valence electrons are the electrons in the last-filled principal energy level. 
B) For main-group elements, the number of valence electrons is equal to the number of electrons in the highest-energy s and p sublevels. 
C) Except for helium, the Roman numeral group number corresponds to the number of valence electrons for the main-group elements. 
D) The period number of an element equals the energy level of the valence electrons. 
E) Elements in the p-block in the fourth period and below include their d electrons as part of their valence electron count. 
A) The valence electrons are the electrons in the last-filled principal energy level. 
B) For main-group elements, the number of valence electrons is equal to the number of electrons in the highest-energy s and p sublevels. 
C) Except for helium, the Roman numeral group number corresponds to the number of valence electrons for the main-group elements. 
D) The period number of an element equals the energy level of the valence electrons. 
E) Elements in the p-block in the fourth period and below include their d electrons as part of their valence electron count.

Question 20

Which element has the abbreviated ground-state electron configuration [Ar]4s23d8?

Accepted Answer

A) Co 
B) Ni 
C) Kr 
D) Cu 
E) Ca 
A) Co 
B) Ni 
C) Kr 
D) Cu 
E) Ca

Which of the following statements regarding orbital diagrams is correct?

The type of radiation with wavelengths just slightly longer than red light is infrared.

There is one unpaired electron in a phosphorus atom.

Rank the following elements in order of increasing atomic size: Ge, Rb, Ne, S

Which of the following statements regarding the Bohr model of the hydrogen atom is incorrect?

The color of visible light with the lowest energy is red.

Select the pair that has the larger atom or ion listed first.

Which element has the abbreviated ground-state electron configuration [Ar]4s²3d⁶?

A laser used in DVD players has a wavelength of 405 nm.What is the frequency of this light in hertz (s^-¹)?

Rank the following elements in order of increasing atomic size: Sr, He, Si, F

Which of the following is the correct ground state electron configuration for a magnesium atom?

The valence level and the number of valence electrons, respectively, for phosphorus are:

Sodium has a greater first ionization energy than cesium because sodium's valence electron is closer to the nucleus than cesium's valence electron.

The maximum number of electrons in the 2^nd principal energy level is 8.

Which elements have a partially filled d sublevel in their ground-state electron configuration?

Which of the following is the correct orbital diagram for silicon?

The green line observed in the line spectrum for hydrogen has a wavelength of 486 nm.What is the energy of a photon of this light?

The following orbital diagram corresponds to the element___________.

Which of the following statements regarding valence electrons is incorrect?

Which element has the abbreviated ground-state electron configuration [Ar]4s²3d⁸?

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Chemical Bonding

The Gaseous State

The Liquid and Solid States

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Oxidation-Reduction Reactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 7: Electron Structure of the Atom

Which of the following statements regarding orbital diagrams is correct?

The type of radiation with wavelengths just slightly longer than red light is infrared.

There is one unpaired electron in a phosphorus atom.

Rank the following elements in order of increasing atomic size: Ge, Rb, Ne, S

Which of the following statements regarding the Bohr model of the hydrogen atom is incorrect?

The color of visible light with the lowest energy is red.

Select the pair that has the larger atom or ion listed first.

Which element has the abbreviated ground-state electron configuration [Ar]4s23d6?

A laser used in DVD players has a wavelength of 405 nm.What is the frequency of this light in hertz (s-1)?

Rank the following elements in order of increasing atomic size: Sr, He, Si, F

Which of the following is the correct ground state electron configuration for a magnesium atom?

The valence level and the number of valence electrons, respectively, for phosphorus are:

Sodium has a greater first ionization energy than cesium because sodium's valence electron is closer to the nucleus than cesium's valence electron.

The maximum number of electrons in the 2nd principal energy level is 8.

Which elements have a partially filled d sublevel in their ground-state electron configuration?

Which of the following is the correct orbital diagram for silicon?

The green line observed in the line spectrum for hydrogen has a wavelength of 486 nm.What is the energy of a photon of this light?

The following orbital diagram corresponds to the element___________.

Which of the following statements regarding valence electrons is incorrect?

Which element has the abbreviated ground-state electron configuration [Ar]4s23d8?

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Chemical Bonding

The Gaseous State

The Liquid and Solid States

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Oxidation-Reduction Reactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Which element has the abbreviated ground-state electron configuration [Ar]4s²3d⁶?

A laser used in DVD players has a wavelength of 405 nm.What is the frequency of this light in hertz (s^-¹)?

The maximum number of electrons in the 2^nd principal energy level is 8.

Which element has the abbreviated ground-state electron configuration [Ar]4s²3d⁸?