Question 1

When examining the electromagnetic spectrum,why is it more harmful to be exposed to x-rays than radio waves over a period of time? In your explanation,include the concepts of frequency,waves,and energy.Also,draw transverse waves to assist in your explanation.

Accepted Answer

X-rays have a shorter wavelength (in the...

Question 2

List the following atoms in order of increasing ionization energy: Li,Na,C,O,F.

Accepted Answer

A)  Li 
B)  Na 
C)  F 
D)  Na 
E)  Na < Li < C < F < O

Question 3

When electron configurations differ from expected,it is because orbitals want to be half-filled.

Accepted Answer

A) True 
 B)False

Question 4

Write the electron configuration for the following:
-P

Accepted Answer

1s²2s²2p⁶3s²3p...

Question 5

A line in the spectrum of atomic mercury has a wavelength of 254 nm.When mercury emits a photon of light at this wavelength,the frequency of this light is

Accepted Answer

A)  8.47  ×	imes×  10-16 s-1
B)  7.82  ×	imes× 10-19 s-1
C)  1.18  ×	imes×  1015 s-1
D)  76.1 s-1
E)  none of these

Question 6

Which of the following statements is true?

Accepted Answer

A)  The krypton 1s orbital is smaller than the helium 1s orbital because krypton's nuclear charge draws the electrons closer.
B)  The krypton 1s orbital is larger than the helium 1s orbital because krypton contains more electrons.
C)  The krypton 1s orbital is smaller than the helium 1s orbital because krypton's p and d orbitals crowd the s orbitals.
D)  The krypton 1s orbital and helium 1s orbital are the same size because both s orbitals can only have two electrons.
E)  The krypton 1s orbital is larger than the helium 1s orbital because krypton's ionization energy is lower,so it's easier to remove electrons.

Question 7

Which of the following statements is false?

Accepted Answer

A)  An orbital can accommodate at most two electrons.
B)  The electron density at a point is proportional to  Ψ\varPsiΨ  2 at that point.
C)  The spin quantum number of an electron must be either + 2 at that point. 
C)  The spin quantum number of an electron must be either +   or -   . 
D)  A 2p orbital is more penetrating than a 2s;i.e. ,it has a higher electron density near the nucleus and inside the charge cloud of a 1s orbital. 
E)  In the usual order of filling,the 6s orbital is filled before the 4f orbital. " class="answers-bank-image d-inline" rel="preload" > or - 2 at that point. 
C)  The spin quantum number of an electron must be either +   or -   . 
D)  A 2p orbital is more penetrating than a 2s;i.e. ,it has a higher electron density near the nucleus and inside the charge cloud of a 1s orbital. 
E)  In the usual order of filling,the 6s orbital is filled before the 4f orbital. " class="answers-bank-image d-inline" rel="preload" > .
D)  A 2p orbital is more penetrating than a 2s;i.e. ,it has a higher electron density near the nucleus and inside the charge cloud of a 1s orbital.
E)  In the usual order of filling,the 6s orbital is filled before the 4f orbital.

Question 8

Which of the following statements about quantum theory is incorrect?

Accepted Answer

A)  The energy and position of an electron cannot be determined simultaneously.
B)  Lower energy orbitals are filled with electrons before higher energy orbitals.
C)  When filling orbitals of equal energy,two electrons will occupy the same orbital before filling a new orbital.
D)  No two electrons can have the same four quantum numbers.
E)  All of these are correct.

Question 9

Consider the following representation of a 2p-orbital:  Which of the following statements best describes the movement of electrons in a p-orbital?

Accepted Answer

A)  The electrons move along the outer surface of the p-orbital,similar to a "figure 8" type of movement.
B)  The electrons move within the two lobes of the p-orbital,but never beyond the outside surface of the orbital.
C)  The electrons are concentrated at the center (node) of the two lobes.
D)  The electrons are only moving in one lobe at any given time.
E)  The electron movement cannot be exactly determined.

Question 10

Fe has __________ that is (are) unpaired in its d orbitals.

Accepted Answer

A)  one electron
B)  two electrons
C)  three electrons
D)  four electrons
E)  none of these

Question 11

From the following list of observations,choose the one that most clearly supports the following conclusion:
a) emission spectrum of hydrogen
b) the photoelectric effect
c) scattering of alpha particles by metal foil
d) diffraction
e) cathode "rays"
-Electromagnetic radiation has wave characteristics.

Accepted Answer

A)  observation a
B)  observation b
C)  observation c
D)  observation d
E)  observation e

Question 12

The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allowed by the Pauli principle in a particular set of degenerate orbitals" is known as

Accepted Answer

A)  the aufbau principle
B)  Hund's rule
C)  Heisenberg uncertainty principle
D)  the Pauli exclusion principle
E)  the quantum model

Question 13

The __________ quantum number is related to the size and energy of the orbital.

Accepted Answer

The answer of The __________ quantum number is related to...

Question 14

How many electrons in an atom can have the following quantum numbers?
a)n = 3
b)n = 2,l = 0
c)n = 2,l = 2,ml = 0
d)n = 2,l = 0,ml = 0,ms = 1/2

Accepted Answer

a)18;b)2;c)0;d)1
a)The n = 3 level consi...

Question 15

The electron configuration for the barium atom is:

Accepted Answer

A)  1s22s22p63s23p64s23d10
B)  [Xe]6s2
C)  1s22s22p63s23p64s1
D)  1s22s22p63s23p64s2
E)  none of these

Question 16

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state:
-[Ne]3s23p5

Accepted Answer

The element is Cl wi...

Question 17

Which of the following is a reasonable criticism of the Bohr model of the atom?

Accepted Answer

A)  It makes no attempt to explain why the negative electron does not eventually fall into the positive nucleus.
B)  It does not adequately predict the line spectrum of hydrogen.
C)  It does not adequately predict the ionization energy of the valence electron(s) for elements other than hydrogen.
D)  It does not adequately predict the ionization energy of the first energy level electrons for one-electron species for elements other than hydrogen.
E)  It shows the electrons to exist outside of the nucleus.

Question 18

Of the following elements,which needs three electrons to complete its valence shell?

Accepted Answer

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

Question 19

Choose the atom or ion using a periodic table.
-Larger atomic or ionic radius,F or F-

Accepted Answer

Question 20

Which of the following processes represents the ionization energy of bromine?

Accepted Answer

A)  Br(s)    Br+(g) + e- 
B)  Br(l)      Br+(g) + e- 
C)  Br(g)      Br+(g) + e- 
D)  Br(s)      Br+(s) + e- 
E)  Br2(g)      Br2+(g) + e-" class="answers-bank-image d-inline" rel="preload" >   Br+(g) + e-
B)  Br(l)    Br+(g) + e- 
B)  Br(l)      Br+(g) + e- 
C)  Br(g)      Br+(g) + e- 
D)  Br(s)      Br+(s) + e- 
E)  Br2(g)      Br2+(g) + e-" class="answers-bank-image d-inline" rel="preload" >   Br+(g) + e-
C)  Br(g)    Br+(g) + e- 
B)  Br(l)      Br+(g) + e- 
C)  Br(g)      Br+(g) + e- 
D)  Br(s)      Br+(s) + e- 
E)  Br2(g)      Br2+(g) + e-" class="answers-bank-image d-inline" rel="preload" >   Br+(g) + e-
D)  Br(s)    Br+(g) + e- 
B)  Br(l)      Br+(g) + e- 
C)  Br(g)      Br+(g) + e- 
D)  Br(s)      Br+(s) + e- 
E)  Br2(g)      Br2+(g) + e-" class="answers-bank-image d-inline" rel="preload" >   Br+(s) + e-
E)  Br2(g)    Br+(g) + e- 
B)  Br(l)      Br+(g) + e- 
C)  Br(g)      Br+(g) + e- 
D)  Br(s)      Br+(s) + e- 
E)  Br2(g)      Br2+(g) + e-" class="answers-bank-image d-inline" rel="preload" >   Br2+(g) + e-

Exam 7: Atomic Structure and Periodicity

Consider the following representation of a 2p-orbital: Which of the following statements best describes the movement of electrons in a p-orbital?

Correct Answer
verified

Correct Answer
verified

When electron configurations differ from expected,it is because orbitals want to be half-filled.

Correct Answer
verified

Choose the atom or ion using a periodic table. -Larger atomic or ionic radius,F or F^-

Correct Answer
verified

The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allowed by the Pauli principle in a particular set of degenerate orbitals" is known as

Correct Answer
verified

When examining the electromagnetic spectrum,why is it more harmful to be exposed to x-rays than radio waves over a period of time? In your explanation,include the concepts of frequency,waves,and energy.Also,draw transverse waves to assist in your explanation.

Correct Answer
verified
X-rays have a shorter wavelength (in the...
View Answer

The __________ quantum number is related to the size and energy of the orbital.

Correct Answer
verified

Which of the following statements about quantum theory is incorrect?

Correct Answer
verified

Fe has __________ that is (are) unpaired in its d orbitals.

Correct Answer
verified

List the following atoms in order of increasing ionization energy: Li,Na,C,O,F.

Correct Answer
verified

How many electrons in an atom can have the following quantum numbers? a)n = 3 b)n = 2,l = 0 c)n = 2,l = 2,m_l= 0 d)n = 2,l = 0,m_l = 0,m_s = 1/2

Correct Answer
verified
a)18;b)2;c)0;d)1
a)The n = 3 level consi...
View Answer

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state: -[Ne]3s²3p⁵

Correct Answer
verified
The element is Cl wi...
View Answer

Which of the following processes represents the ionization energy of bromine?

Correct Answer
verified

Of the following elements,which needs three electrons to complete its valence shell?

Correct Answer
verified

The electron configuration for the barium atom is:

Correct Answer
verified

Which of the following is a reasonable criticism of the Bohr model of the atom?

Correct Answer
verified

Which of the following statements is true?

Correct Answer
verified

A line in the spectrum of atomic mercury has a wavelength of 254 nm.When mercury emits a photon of light at this wavelength,the frequency of this light is

Correct Answer
verified

Which of the following statements is false?

Correct Answer
verified

Write the electron configuration for the following: -P

Correct Answer
verified
1s²2s²2p⁶3s²3p...
View Answer

Exam 7: Atomic Structure and Periodicity

Consider the following representation of a 2p-orbital: Which of the following statements best describes the movement of electrons in a p-orbital?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When electron configurations differ from expected,it is because orbitals want to be half-filled.

Correct AnswerverifiedShow Answer

Choose the atom or ion using a periodic table. -Larger atomic or ionic radius,F or F-

Correct AnswerverifiedShow Answer

The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allowed by the Pauli principle in a particular set of degenerate orbitals" is known as

Correct AnswerverifiedShow Answer

When examining the electromagnetic spectrum,why is it more harmful to be exposed to x-rays than radio waves over a period of time? In your explanation,include the concepts of frequency,waves,and energy.Also,draw transverse waves to assist in your explanation.

Correct AnswerverifiedX-rays have a shorter wavelength (in the...View AnswerShow Answer

The __________ quantum number is related to the size and energy of the orbital.

Correct AnswerverifiedShow Answer

Which of the following statements about quantum theory is incorrect?

Correct AnswerverifiedShow Answer

Fe has __________ that is (are) unpaired in its d orbitals.

Correct AnswerverifiedShow Answer

List the following atoms in order of increasing ionization energy: Li,Na,C,O,F.

Correct AnswerverifiedShow Answer

How many electrons in an atom can have the following quantum numbers? a)n = 3 b)n = 2,l = 0 c)n = 2,l = 2,ml = 0 d)n = 2,l = 0,ml = 0,ms = 1/2

Correct Answerverifieda)18;b)2;c)0;d)1a)The n = 3 level consi...View AnswerShow Answer

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state: -[Ne]3s23p5

Correct AnswerverifiedThe element is Cl wi...View AnswerShow Answer

Which of the following processes represents the ionization energy of bromine?

Correct AnswerverifiedShow Answer

Of the following elements,which needs three electrons to complete its valence shell?

Correct AnswerverifiedShow Answer

The electron configuration for the barium atom is:

Correct AnswerverifiedShow Answer

Which of the following is a reasonable criticism of the Bohr model of the atom?

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

A line in the spectrum of atomic mercury has a wavelength of 254 nm.When mercury emits a photon of light at this wavelength,the frequency of this light is

Correct AnswerverifiedShow Answer

Which of the following statements is false?

Correct AnswerverifiedShow Answer

Write the electron configuration for the following: -P

Correct Answerverified1s22s22p63s23p...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Choose the atom or ion using a periodic table. -Larger atomic or ionic radius,F or F^-

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
X-rays have a shorter wavelength (in the...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many electrons in an atom can have the following quantum numbers? a)n = 3 b)n = 2,l = 0 c)n = 2,l = 2,m_l= 0 d)n = 2,l = 0,m_l = 0,m_s = 1/2

Correct Answer
verified
a)18;b)2;c)0;d)1
a)The n = 3 level consi...
View Answer

Given the following electronic configuration of neutral atoms,identify the element and state the number of unpaired electrons in its ground state: -[Ne]3s²3p⁵

Correct Answer
verified
The element is Cl wi...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified
1s²2s²2p⁶3s²3p...
View Answer