Question 1

What is the energy of a photon of blue light that has a wavelength of 453 nm?

Accepted Answer

A) 4.53 $\times$10-7 J 
B) 4.39 $\times$10-19 J 
C) 6.62 $\times$ 1014 J 
D) 9.00 $\times$ 10-32 J 
E) 2.28 $\times$ 1018 J 
A) 4.53 $\times$10-7 J 
B) 4.39 $\times$10-19 J 
C) 6.62 $\times$ 1014 J 
D) 9.00 $\times$ 10-32 J 
E) 2.28 $\times$ 1018 J

Question 2

Which of the following have 10 electrons in the d orbitals?

Accepted Answer

A) Mn 
B) Fe 
C) Cu 
D) Zn 
E) two of the above 
A) Mn 
B) Fe 
C) Cu 
D) Zn 
E) two of the above

Question 3

In general,the ionization energy and electron affinity involve more energy from __________ (left to right or right to left)in a period of the periodic table.Why?

Accepted Answer

The increase is from

Question 4

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state:
-[Ar]4s13d10

Accepted Answer

The element is Cu wi

Question 5

A gamma ray of wavelength 1.00 $\times$ 10-8 cm has enough energy to remove an electron from a hydrogen atom.

Accepted Answer

A) True 
 B)False

Question 6

Order the elements S,Cl,and F in terms of increasing ionization energy.

Accepted Answer

A) S,Cl,F 
B) Cl,F,S 
C) F,S,Cl 
D) F,Cl,S 
E) S,F,Cl 
A) S,Cl,F 
B) Cl,F,S 
C) F,S,Cl 
D) F,Cl,S 
E) S,F,Cl

Question 7

In general,the ionization energy and electron affinity involve more energy from _________ (top to bottom or bottom to top)in a family of the periodic table.Why?

Accepted Answer

The increase is from bottom to

Question 8

Which of the following statements best describes the Heisenberg uncertainty principle?

Accepted Answer

A) The exact position of an electron is always uncertain. 
B) The velocity of a particle can only be estimated. 
C) It is impossible to accurately know both the exact location and momentum of a particle. 
D) The location and momentum of a macroscopic object are not known with certainty. 
E) The location and momentum of a particle can be determined accurately,but not the identity of the particle. 
A) The exact position of an electron is always uncertain. 
B) The velocity of a particle can only be estimated. 
C) It is impossible to accurately know both the exact location and momentum of a particle. 
D) The location and momentum of a macroscopic object are not known with certainty. 
E) The location and momentum of a particle can be determined accurately,but not the identity of the particle.

Question 9

Which of the following electron configurations is different from that expected?

Accepted Answer

A) Ca 
B) Sc 
C) Ti 
D) V 
E) Cr 
A) Ca 
B) Sc 
C) Ti 
D) V 
E) Cr

Question 10

Consider an atom traveling at 1% of the speed of light.The de Broglie wavelength is found to be 1.46 $\times$ 10-3 pm.Which element is this?

Accepted Answer

A) Be 
B) Zr 
C) Kr 
D) Fe 
E) P 
A) Be 
B) Zr 
C) Kr 
D) Fe 
E) P

Question 11

How many electrons in an atom can have the quantum numbers n = 3,l = 2?

Accepted Answer

A) 2 
B) 5 
C) 10 
D) 18 
E) 6 
A) 2 
B) 5 
C) 10 
D) 18 
E) 6

Question 12

Choose the atom or ion using a periodic table.
-Larger first ionization energy,Li or Be

Accepted Answer

The answer of Choose the atom or ion using a...

Question 13

When an electron in a 2p orbital of a particular atom makes a transition to the 2s orbital,a photon of approximate wavelength 629.1 nm is emitted.The energy difference between these 2p and 2s orbitals is

Accepted Answer

A) 3.16 $\times$10-28 J 
B) 3.16 $\times$ 10-19 J 
C) 3.16 $\times$ 10-17 J 
D) 1.25 $\times$ 10-31 J 
E) none of these 
A) 3.16 $\times$10-28 J 
B) 3.16 $\times$ 10-19 J 
C) 3.16 $\times$ 10-17 J 
D) 1.25 $\times$ 10-31 J 
E) none of these

Question 14

Choose the atom or ion using a periodic table.
-The calcium atom is much larger than the calcium ion,while the fluorine atom is much smaller than the fluorine ion.Explain this natural occurrence.

Accepted Answer

A cation has a larger proton to electron

Question 15

Which of the following electron configurations is correct?

Accepted Answer

A) Ga: [Kr]4s23d104p1 
B) Mo: [Kr]5s24d5 
C) Ca: [Ar]4s13d10 
D) Br: [Kr]4s23d104p7 
E) Bi: [Xe]6s24f145d106p3 
A) Ga: [Kr]4s23d104p1 
B) Mo: [Kr]5s24d5 
C) Ca: [Ar]4s13d10 
D) Br: [Kr]4s23d104p7 
E) Bi: [Xe]6s24f145d106p3

Question 16

Of the following elements,which is most likely to form a negative ion with charge 1-?

Accepted Answer

A) Ba 
B) Ca 
C) Si 
D) P 
E) Cl 
A) Ba 
B) Ca 
C) Si 
D) P 
E) Cl

Question 17

When a hydrogen electron makes a transition from n = 3 to n = 1,which of the following statements is true?
I.Energy is emitted.
II.Energy is absorbed.
III.The electron loses energy.
IV.The electron gains energy.
V.The electron cannot make this transition.

Accepted Answer

A) I,IV 
B) I,III 
C) II,III 
D) II,IV 
E) V 
A) I,IV 
B) I,III 
C) II,III 
D) II,IV 
E) V

Question 18

Bohr's model correctly describes the hydrogen atom and other small atoms.

Accepted Answer

A) True 
 B)False

Question 19

Diffraction results when light is scattered from a regular array of points or lines.

Accepted Answer

A) True 
 B)False

Question 20

In the hydrogen spectrum,what is the wavelength of light associated with the n = 3 to n = 1 electron transition?

Accepted Answer

A) 3.97 F$\times$ 10-25 nm 
B) 8.21 $\times$ 102 nm 
C) 9.75 $\times$ 106 cm 
D) 1.94 $\times$ 10-18 m 
E) 1.03 $\times$ 10-7 m 
A) 3.97 F$\times$ 10-25 nm 
B) 8.21 $\times$ 102 nm 
C) 9.75 $\times$ 106 cm 
D) 1.94 $\times$ 10-18 m 
E) 1.03 $\times$ 10-7 m

Exam 7: Atomic Structure and Periodicity

What is the energy of a photon of blue light that has a wavelength of 453 nm?

Which of the following have 10 electrons in the d orbitals?

In general,the ionization energy and electron affinity involve more energy from __________ (left to right or right to left)in a period of the periodic table.Why?

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state: -[Ar]4s13d10

A gamma ray of wavelength 1.00 ×\times× 10-8 cm has enough energy to remove an electron from a hydrogen atom.

Order the elements S,Cl,and F in terms of increasing ionization energy.

In general,the ionization energy and electron affinity involve more energy from _________ (top to bottom or bottom to top)in a family of the periodic table.Why?

Which of the following statements best describes the Heisenberg uncertainty principle?

Which of the following electron configurations is different from that expected?

Consider an atom traveling at 1% of the speed of light.The de Broglie wavelength is found to be 1.46 ×\times× 10-3 pm.Which element is this?

How many electrons in an atom can have the quantum numbers n = 3,l = 2?

Choose the atom or ion using a periodic table. -Larger first ionization energy,Li or Be

When an electron in a 2p orbital of a particular atom makes a transition to the 2s orbital,a photon of approximate wavelength 629.1 nm is emitted.The energy difference between these 2p and 2s orbitals is

Choose the atom or ion using a periodic table. -The calcium atom is much larger than the calcium ion,while the fluorine atom is much smaller than the fluorine ion.Explain this natural occurrence.

Which of the following electron configurations is correct?

Of the following elements,which is most likely to form a negative ion with charge 1-?

When a hydrogen electron makes a transition from n = 3 to n = 1,which of the following statements is true? I.Energy is emitted. II.Energy is absorbed. III.The electron loses energy. IV.The electron gains energy. V.The electron cannot make this transition.

Bohr's model correctly describes the hydrogen atom and other small atoms.

Diffraction results when light is scattered from a regular array of points or lines.

In the hydrogen spectrum,what is the wavelength of light associated with the n = 3 to n = 1 electron transition?

Chemical Foundations

Atoms, molecules, and Ions

Stoichiometry

Chemical Reactions and Solutions Stoichiometry

Gases

Thermochemistry

Bonding: General Concepts

Covalent Bonding: Orbitals

Liquids and Solids

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex Ion Equilibria

Spontaneity, entropy, and Free Energy

Electrochemistry

The Nucleus: a Chemists View

The Representative Elements

Transition Metals and Coordination Chemistry

Organic and Biological Molecules

Filters

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state: -[Ar]4s¹3d¹⁰

A gamma ray of wavelength 1.00 $\times$ 10^-⁸ cm has enough energy to remove an electron from a hydrogen atom.

Consider an atom traveling at 1% of the speed of light.The de Broglie wavelength is found to be 1.46 $\times$ 10^-³ pm.Which element is this?