Question 1

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

Accepted Answer

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

Question 2

Molybdenum has an anomalous electron configuration.Write the electron configuration of Mo using shorthand notation.

Accepted Answer

A) [Kr] 5s0 4d6 
B) [Kr] 5s0 4d0 5p6 
C) [Kr] 5s1 4d5 
D) [Kr] 5s2 4d4 
A) [Kr] 5s0 4d6 
B) [Kr] 5s0 4d0 5p6 
C) [Kr] 5s1 4d5 
D) [Kr] 5s2 4d4

Question 3

The amount of data that can be stored in an optical disc storage medium is related to the wavelength of the laser employed.Blu-Ray discs that are read by a laser having a wavelength of 405 nm have a much greater storage capacity than a DVD that is read by a 650 nm laser.The color of the 405 nm laser beam is ________,whereas the color of the 650 nm laser is ________.

Accepted Answer

The answer of The amount of data that can be...

Question 4

What are the possible values of l if n = 5?

Accepted Answer

A) 5 
B) 0,1,2,3,or 4 
C) -4,-3,-2,-1,0,+1,+2,+3,or +4 
D) -5,-4,-3,-2,-1,0,+1,+2,+3,+4,or +5 
A) 5 
B) 0,1,2,3,or 4 
C) -4,-3,-2,-1,0,+1,+2,+3,or +4 
D) -5,-4,-3,-2,-1,0,+1,+2,+3,+4,or +5

Question 5

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 6

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 
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 7

Which of the following is true?

Accepted Answer

A) The Bohr atom is the model currently accepted for electrons in atoms. 
B) Electrons travel around the nucleus in circular orbits. 
C) There is a 5% chance of finding an electron in an atom outside its orbital. 
D) The square of the wave function gives the probability of finding the electron. 
A) The Bohr atom is the model currently accepted for electrons in atoms. 
B) Electrons travel around the nucleus in circular orbits. 
C) There is a 5% chance of finding an electron in an atom outside its orbital. 
D) The square of the wave function gives the probability of finding the electron.

Question 8

The symbol [Kr] represents

Accepted Answer

A) 4s24p6. 
B) 1s22s22p63s23p64s24p6. 
C) 1s22s22p63s23p63d104s24p6. 
D) 1s22s22p63s23p63d104s24p64d10. 
A) 4s24p6. 
B) 1s22s22p63s23p64s24p6. 
C) 1s22s22p63s23p63d104s24p6. 
D) 1s22s22p63s23p63d104s24p64d10.

Question 9

Which statement is false?

Accepted Answer

A) For any atom,the 4s orbital lies lower in energy than the 5s orbital. 
B) For a hydrogen atom,a 4s orbital,a 4p orbital,and a 4d orbital all have the same energy. 
C) The 4s orbital lies lower in energy than the 3d orbital for atoms K,Ca,Sc,and Ti. 
D) The 4s orbital lies lower in energy than the 3d orbital for Cu and Fe2+. 
A) For any atom,the 4s orbital lies lower in energy than the 5s orbital. 
B) For a hydrogen atom,a 4s orbital,a 4p orbital,and a 4d orbital all have the same energy. 
C) The 4s orbital lies lower in energy than the 3d orbital for atoms K,Ca,Sc,and Ti. 
D) The 4s orbital lies lower in energy than the 3d orbital for Cu and Fe2+.

Question 10

Copper has the anomalous electron configuration ________.

Accepted Answer

The answer of Copper has the anomalous electron configuration ________....

Question 11

How many orbitals are there in the seventh shell?

Accepted Answer

A) 6 
B) 7 
C) 21 
D) 49 
A) 6 
B) 7 
C) 21 
D) 49

Question 12

Which orbital-filling diagram represents the anomalous ground state of chromium?

Accepted Answer

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

Question 13

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 As?

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 14

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 15

What is the ground-state electron configuration of tellurium?

Accepted Answer

A) [Kr]4d105s25p4 
B) [Kr]5s25p65d8 
C) [Kr]5s25p4 
D) [Kr]4f144d105s25p4 
A) [Kr]4d105s25p4 
B) [Kr]5s25p65d8 
C) [Kr]5s25p4 
D) [Kr]4f144d105s25p4

Question 16

According to the Balmer-Rydberg equation,electromagnetic radiation with wavelength λ = 486.1 nm will be absorbed when an electron undergoes which of the following transitions?

Accepted Answer

A) m = 2 → n = 3 
B) m = 2 → n = 4 
C) n = 3 → m = 2 
D) n = 4 → m = 2 
A) m = 2 → n = 3 
B) m = 2 → n = 4 
C) n = 3 → m = 2 
D) n = 4 → m = 2

Question 17

For an orbital,a node is

Accepted Answer

A) the midpoint of the orbital. 
B) a surface inside which there is a 90% chance of finding the electron. 
C) a surface where there is a maximum probability of finding the electron. 
D) a surface where there is no chance of finding the electron. 
A) the midpoint of the orbital. 
B) a surface inside which there is a 90% chance of finding the electron. 
C) a surface where there is a maximum probability of finding the electron. 
D) a surface where there is no chance of finding the electron.

Question 18

The smallest number that can be used for m or n in the Balmer-Rydberg equation is ________ and the largest number is ________.

Accepted Answer

The answer of The smallest number that can be used...

Question 19

How many unpaired electrons are in an atom of Co in its ground state?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 7 
A) 1 
B) 2 
C) 3 
D) 7

Question 20

Of the following,which has the shortest de Broglie wavelength?

Accepted Answer

A) an airplane moving at a velocity of 300 mph 
B) a helium nucleus moving at a velocity of 1000 mph 
C) a nitrogen molecule moving at a velocity of 1000 mph 
D) a nitrogen molecule moving at a velocity of 5000 mph 
A) an airplane moving at a velocity of 300 mph 
B) a helium nucleus moving at a velocity of 1000 mph 
C) a nitrogen molecule moving at a velocity of 1000 mph 
D) a nitrogen molecule moving at a velocity of 5000 mph

Exam 5: Periodicity and the Atomic Structure of Atoms

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

Molybdenum has an anomalous electron configuration.Write the electron configuration of Mo using shorthand notation.

What are the possible values of l if n = 5?

A quantized variable

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

Which of the following is true?

The symbol [Kr] represents

Which statement is false?

Copper has the anomalous electron configuration ________.

How many orbitals are there in the seventh shell?

Which orbital-filling diagram represents the anomalous ground state of chromium?

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 As?

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

What is the ground-state electron configuration of tellurium?

According to the Balmer-Rydberg equation,electromagnetic radiation with wavelength λ = 486.1 nm will be absorbed when an electron undergoes which of the following transitions?

For an orbital,a node is

The smallest number that can be used for m or n in the Balmer-Rydberg equation is ________ and the largest number is ________.

How many unpaired electrons are in an atom of Co in its ground state?

Of the following,which has the shortest de Broglie wavelength?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

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

The smallest number that can be used for m or n in the Balmer-Rydberg equation is and the largest number is .