Question 1

What is the core charge for the potassium atom, K?

Accepted Answer

A)  +1 
B)  +2 
C)  +8 
D)  +9 
E)  +19 
A)  +1 
B)  +2 
C)  +8 
D)  +9 
E)  +19

Question 2

What is the electron configuration for the bromide ion, Br-?

Accepted Answer

A)  [Ar] 4s2 4p5 
B)  [Ar] 4s2 3d10 4p7 
C)  [Ar] 4s2 3d10 4p5 
D)  [Ar] 4s2 3d10 4p6 
E)  [Ar] 4s2 3d10 3p6  
A)  [Ar] 4s2 4p5 
B)  [Ar] 4s2 3d10 4p7 
C)  [Ar] 4s2 3d10 4p5 
D)  [Ar] 4s2 3d10 4p6 
E)  [Ar] 4s2 3d10 3p6

Question 3

If a powerful enough source of energy is used in the PES experiment, it is
Possible to measure the energy required to remove the 2nd, 3rd, 4th, and so on, electrons from an atom. Which of the following elements would have the largest fourth ionization energy?

Accepted Answer

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

Question 4

Given the information below, what is the average valence electron energy for the oxygen atom?

Accepted Answer

A)  19.4 MJ/mol 
B)  14.6 MJ/mol 
C)  116.7 MJ/mol 
D)  1.44 MJ/mol 
E)  1.91 MJ/mol 
A)  19.4 MJ/mol 
B)  14.6 MJ/mol 
C)  116.7 MJ/mol 
D)  1.44 MJ/mol 
E)  1.91 MJ/mol

Question 5

There is a fundamental difference between the long wavelength IR radiation given off by the toy ovens sold at Toys 'R Us and the shorter wavelength UV radiation emitted by the tanning booths at your local strip mall. Which of the following statements is $\textbf{      true?   }$

Accepted Answer

A)  IR radiation has a higher frequency than UV radiation. 
B)  IR radiation carries more energy per photon than UV radiation. 
C)  IR radiation carries a larger amplitude than UV radiation. 
D)  IR radiation travels slower than UV radiation. 
E)  None of the above statements are true. 
A)  IR radiation has a higher frequency than UV radiation. 
B)  IR radiation carries more energy per photon than UV radiation. 
C)  IR radiation carries a larger amplitude than UV radiation. 
D)  IR radiation travels slower than UV radiation. 
E)  None of the above statements are true.

Question 6

What is the energy of the light emitted when an electron falls from the n = 4 to the n = 2 orbit in the hydrogen atom?

Accepted Answer

A)  4.09 x 10-19 J 
B)  5.45 x 10-18 J 
C)  4.36 x 10-18 J 
D)  2.62 x 10-17 J 
E)  none of the above 
A)  4.09 x 10-19 J 
B)  5.45 x 10-18 J 
C)  4.36 x 10-18 J 
D)  2.62 x 10-17 J 
E)  none of the above

Question 7

A cheap spectrophotometer can be made using a light-emitting diode (LED) as the source of the light. Assume that you build one of these spectrometers using an LED that gives off green light with a wavelength of 520 nm. What is the energy of a photon of this green light?

Accepted Answer

A)  1.15 x 10-34 J 
B)  1.03 x 10-22 J 
C)  3.82 x 10-21 J 
D)  3.82 x 10-19 J 
E)  none of the above 
A)  1.15 x 10-34 J 
B)  1.03 x 10-22 J 
C)  3.82 x 10-21 J 
D)  3.82 x 10-19 J 
E)  none of the above

Question 8

Predict the order of decreasing first ionization energies for Ar, K, and Ca.

Accepted Answer

A)  Ar > K > Ca 
B)  Ca > K > Ar 
C)  K > Ar > Ca 
D)  K > Ca > Ar 
E)  Ar > Ca > K 
A)  Ar > K > Ca 
B)  Ca > K > Ar 
C)  K > Ar > Ca 
D)  K > Ca > Ar 
E)  Ar > Ca > K

Question 9

Which of the following describes a possible set of quantum numbers for the last electron added to form an aluminum atom when atomic orbitals are filled?

Accepted Answer

A)  1, 0, 0, +   
B)  2, 0, 0, +   
C)  2, l, 1, +   
D)  3, 0, 0, +   
E)  3, 1, 1, +   
A)  1, 0, 0, +   
B)  2, 0, 0, +   
C)  2, l, 1, +   
D)  3, 0, 0, +   
E)  3, 1, 1, +

Question 10

In a 23.490 kilogauss magnetic field, 13C nuclei absorb electromagnetic radiation in the RF (radio) portion of the spectrum at a frequency of 25.147 MHz (25.147 x 106 s-1.) Calculate the wavelength of this radiation.

Accepted Answer

A)  longer than 10 meters 
B)  between 10 and 0.10 meters 
C)  between 0.10 and 10-4 meters 
D)  between 10-4 and 10-6 
E)  shorter than 10-6 meters 
A)  longer than 10 meters 
B)  between 10 and 0.10 meters 
C)  between 0.10 and 10-4 meters 
D)  between 10-4 and 10-6 
E)  shorter than 10-6 meters

Question 11

Yellow light has a frequency of 5.2 x 1014 cycles per second while red light has a frequency of 4.3 x 1014 cycles per second. Which of the following correctly describes the relationship between the wavelength and energy of yellow versus red light?

Accepted Answer

A)  Red light has a longer wavelength and more energy than yellow light. 
B)  Yellow light has a longer wavelength and more energy than red light. 
C)  Red light has a longer wavelength and less energy than yellow light. 
D)  Yellow light has a longer wavelength and less energy than red light. 
E)  None of these. 
A)  Red light has a longer wavelength and more energy than yellow light. 
B)  Yellow light has a longer wavelength and more energy than red light. 
C)  Red light has a longer wavelength and less energy than yellow light. 
D)  Yellow light has a longer wavelength and less energy than red light. 
E)  None of these.

Question 12

Which of the following atoms or ions is the smallest?

Accepted Answer

A)  Na 
B)  Na+ 
C)  Mg 
D)  Mg2+ 
E)  Ba2+ 
A)  Na 
B)  Na+ 
C)  Mg 
D)  Mg2+ 
E)  Ba2+

Question 13

Which set of n, l, ml and ms quantum numbers is allowed?

Accepted Answer

A)  4,-2,-1,   
B)  4,2,3,   
C)  4,3,0,1 
D)  4,0,0,-   
E)  4,2,2,2 
A)  4,-2,-1,   
B)  4,2,3,   
C)  4,3,0,1 
D)  4,0,0,-   
E)  4,2,2,2

Question 14

If a laser operated on the n = 5 to n = 2 transition of a H atom, what wavelength in nm photon would be emitted?

Accepted Answer

A)  380 nm 
B)  434 nm 
C)  1950 nm 
D)  3910 nm 
E)  none of the above 
A)  380 nm 
B)  434 nm 
C)  1950 nm 
D)  3910 nm 
E)  none of the above

Question 15

Which of the following provides the best evidence for the presence of the electron shell structure of atoms?

Accepted Answer

A)  The decrease in ionization energy going down a group. 
B)  The increase in ionization energy across a period. 
C)  That the value of ms can be +1/2 or -1/2 
D)  That the ionization energy of O is less than the ionization energy of N. 
E)  All of the above provide evidence for the shell structure of atoms. 
A)  The decrease in ionization energy going down a group. 
B)  The increase in ionization energy across a period. 
C)  That the value of ms can be +1/2 or -1/2 
D)  That the ionization energy of O is less than the ionization energy of N. 
E)  All of the above provide evidence for the shell structure of atoms.

Question 16

What is the correct electron configuration for the Ti atom?

Accepted Answer

A)  1s2 2s2 2p6 3s2 3p6 3d4 
B)  [Ar] 4s2 4d2 
C)  [Ar] 4d4 
D)  1s2 2s2 2p6 3s2 3d2 
E)  [Ar] 4s2 3d2 
A)  1s2 2s2 2p6 3s2 3p6 3d4 
B)  [Ar] 4s2 4d2 
C)  [Ar] 4d4 
D)  1s2 2s2 2p6 3s2 3d2 
E)  [Ar] 4s2 3d2

Question 17

Which electron configuration for carbon would satisfy Hund's rules?

Accepted Answer

A)  1s2 2s2 2px2 2py0 2pz0  
B)  1s2 2s2 2px1 2py1 2pz0 
C)  1s2 2s2 2px1 2py1 2pz1 
D)  1s2 2s2 2px2 2py1 2pz1 
E)  None of these configurations satisfy Hund's rules. 
A)  1s2 2s2 2px2 2py0 2pz0  
B)  1s2 2s2 2px1 2py1 2pz0 
C)  1s2 2s2 2px1 2py1 2pz1 
D)  1s2 2s2 2px2 2py1 2pz1 
E)  None of these configurations satisfy Hund's rules.

Question 18

The results of photoelectron spectroscopy studies of the last four elements in the 2nd row of the periodic table are given below. Ionization energies (in units of MJ/mol)
  Which of the following statements is correct?

Accepted Answer

A)  The average valence electron energy for N is larger than O, F, or Ne. 
B)  The average valence electron energy for O is larger than N, F, or Ne. 
C)  The average valence electron energy for F is larger than N, O, or Ne. 
D)  The average valence electron energy for Ne is larger than N, O, or F. 
E)  The average valence electron energy is the same for all four elements. 
A)  The average valence electron energy for N is larger than O, F, or Ne. 
B)  The average valence electron energy for O is larger than N, F, or Ne. 
C)  The average valence electron energy for F is larger than N, O, or Ne. 
D)  The average valence electron energy for Ne is larger than N, O, or F. 
E)  The average valence electron energy is the same for all four elements.

Question 19

Write the electron configuration for the following atoms or ions. 
(I) Br  -  (write the full electron configuration)
(II) Si (write the full electron configuration with orbital diagram; use arrows for the electrons)
(III) Ba (the abbreviated form)

Accepted Answer

The answer of Write the electron configuration for the following...

Question 20

Construct a shell model for potassium, K, like Figure 3.9 in the text.

Accepted Answer

Potassium has a nuclear charge

What is the core charge for the potassium atom, K?

What is the electron configuration for the bromide ion, Br^-?

If a powerful enough source of energy is used in the PES experiment, it is Possible to measure the energy required to remove the 2^nd, 3^rd, 4^th, and so on, electrons from an atom. Which of the following elements would have the largest fourth ionization energy?

Given the information below, what is the average valence electron energy for the oxygen atom?

There is a fundamental difference between the long wavelength IR radiation given off by the toy ovens sold at Toys 'R Us and the shorter wavelength UV radiation emitted by the tanning booths at your local strip mall. Which of the following statements is $\textbf{ true? }$

What is the energy of the light emitted when an electron falls from the n = 4 to the n = 2 orbit in the hydrogen atom?

A cheap spectrophotometer can be made using a light-emitting diode (LED) as the source of the light. Assume that you build one of these spectrometers using an LED that gives off green light with a wavelength of 520 nm. What is the energy of a photon of this green light?

Predict the order of decreasing first ionization energies for Ar, K, and Ca.

Which of the following describes a possible set of quantum numbers for the last electron added to form an aluminum atom when atomic orbitals are filled?

In a 23.490 kilogauss magnetic field, ¹³C nuclei absorb electromagnetic radiation in the RF (radio) portion of the spectrum at a frequency of 25.147 MHz (25.147 x 10⁶ s^-1.) Calculate the wavelength of this radiation.

Yellow light has a frequency of 5.2 x 10¹⁴cycles per second while red light has a frequency of 4.3 x 10¹⁴ cycles per second. Which of the following correctly describes the relationship between the wavelength and energy of yellow versus red light?

Which of the following atoms or ions is the smallest?

Which set of n, l, m_l and m_s quantum numbers is allowed?

If a laser operated on the n = 5 to n = 2 transition of a H atom, what wavelength in nm photon would be emitted?

Which of the following provides the best evidence for the presence of the electron shell structure of atoms?

What is the correct electron configuration for the Ti atom?

Which electron configuration for carbon would satisfy Hund's rules?

The results of photoelectron spectroscopy studies of the last four elements in the 2^nd row of the periodic table are given below. Ionization energies (in units of MJ/mol) Which of the following statements is correct?

Write the electron configuration for the following atoms or ions. (I) Br ^- (write the full electron configuration) (II) Si (write the full electron configuration with orbital diagram; use arrows for the electrons) (III) Ba (the abbreviated form)

Construct a shell model for potassium, K, like Figure 3.9 in the text.

Elements Compounds

The Mole

The Covalent Bond

Ionic and Metallic Bonds

Gases

Making and Breaking of Bonds

Liquids and Solutions

Solids

An Introduction to Kinetics and Equilibrium

Acids and Bases

Oxidation-Reduction Reactions

Chemical Thermodynamics

Kinetics

Nuclear Chemistry

Organic Chemistry

Filters

Exam 3: Structure of the Atom

What is the core charge for the potassium atom, K?

What is the electron configuration for the bromide ion, Br-?

If a powerful enough source of energy is used in the PES experiment, it is Possible to measure the energy required to remove the 2nd, 3rd, 4th, and so on, electrons from an atom. Which of the following elements would have the largest fourth ionization energy?

Given the information below, what is the average valence electron energy for the oxygen atom?

There is a fundamental difference between the long wavelength IR radiation given off by the toy ovens sold at Toys 'R Us and the shorter wavelength UV radiation emitted by the tanning booths at your local strip mall. Which of the following statements is true? \textbf{ true? } true?

What is the energy of the light emitted when an electron falls from the n = 4 to the n = 2 orbit in the hydrogen atom?

A cheap spectrophotometer can be made using a light-emitting diode (LED) as the source of the light. Assume that you build one of these spectrometers using an LED that gives off green light with a wavelength of 520 nm. What is the energy of a photon of this green light?

Predict the order of decreasing first ionization energies for Ar, K, and Ca.

Which of the following describes a possible set of quantum numbers for the last electron added to form an aluminum atom when atomic orbitals are filled?

In a 23.490 kilogauss magnetic field, 13C nuclei absorb electromagnetic radiation in the RF (radio) portion of the spectrum at a frequency of 25.147 MHz (25.147 x 106 s-1.) Calculate the wavelength of this radiation.

Yellow light has a frequency of 5.2 x 1014 cycles per second while red light has a frequency of 4.3 x 1014 cycles per second. Which of the following correctly describes the relationship between the wavelength and energy of yellow versus red light?

Which of the following atoms or ions is the smallest?

Which set of n, l, ml and ms quantum numbers is allowed?

If a laser operated on the n = 5 to n = 2 transition of a H atom, what wavelength in nm photon would be emitted?

Which of the following provides the best evidence for the presence of the electron shell structure of atoms?

What is the correct electron configuration for the Ti atom?

Which electron configuration for carbon would satisfy Hund's rules?

The results of photoelectron spectroscopy studies of the last four elements in the 2nd row of the periodic table are given below. Ionization energies (in units of MJ/mol) Which of the following statements is correct?

Write the electron configuration for the following atoms or ions. (I) Br - (write the full electron configuration) (II) Si (write the full electron configuration with orbital diagram; use arrows for the electrons) (III) Ba (the abbreviated form)

Construct a shell model for potassium, K, like Figure 3.9 in the text.

Elements Compounds

The Mole

The Covalent Bond

Ionic and Metallic Bonds

Gases

Making and Breaking of Bonds

Liquids and Solutions

Solids

An Introduction to Kinetics and Equilibrium

Acids and Bases

Oxidation-Reduction Reactions

Chemical Thermodynamics

Kinetics

Nuclear Chemistry

Organic Chemistry

Filters

What is the electron configuration for the bromide ion, Br^-?

If a powerful enough source of energy is used in the PES experiment, it is Possible to measure the energy required to remove the 2^nd, 3^rd, 4^th, and so on, electrons from an atom. Which of the following elements would have the largest fourth ionization energy?

There is a fundamental difference between the long wavelength IR radiation given off by the toy ovens sold at Toys 'R Us and the shorter wavelength UV radiation emitted by the tanning booths at your local strip mall. Which of the following statements is $\textbf{ true? }$

In a 23.490 kilogauss magnetic field, ¹³C nuclei absorb electromagnetic radiation in the RF (radio) portion of the spectrum at a frequency of 25.147 MHz (25.147 x 10⁶ s^-1.) Calculate the wavelength of this radiation.

Yellow light has a frequency of 5.2 x 10¹⁴cycles per second while red light has a frequency of 4.3 x 10¹⁴ cycles per second. Which of the following correctly describes the relationship between the wavelength and energy of yellow versus red light?

Which set of n, l, m_l and m_s quantum numbers is allowed?

The results of photoelectron spectroscopy studies of the last four elements in the 2^nd row of the periodic table are given below. Ionization energies (in units of MJ/mol) Which of the following statements is correct?

Write the electron configuration for the following atoms or ions. (I) Br ^- (write the full electron configuration) (II) Si (write the full electron configuration with orbital diagram; use arrows for the electrons) (III) Ba (the abbreviated form)