Question 1

Which of the following elements can exist as an allotrope?

Accepted Answer

A)  iron
B)  carbon
C)  silver
D)  silicon
E)  neonF) A) and D)
G) A) and C)

Question 2

Consider the general valence electron configuration of ns2np5 and the following statements: (i) Elements with this electron configuration are expected to form -1 anions.
(ii) Elements with this electron configuration are expected to have large positive electron affinities.
(iii) Elements with this electron configuration are nonmetals.
(iv) Elements with this electron configuration form acidic oxides.
Which statements are true?

Accepted Answer

A)  (i) and (ii) 
B)  (i) , (ii) , and (iii) 
C)  (ii) and (iii) 
D)  (i) , (iii,) and (iv) 
E)  All statements are true.F) B) and D)
G) C) and E)

Question 3

The alkali metal that is naturally radioactive is ________.

Accepted Answer

A)  rubidium
B)  cesium
C)  lithium
D)  francium
E)  sodiumF) A) and E)
G) A) and B)

Question 4

Element M reacts with chlorine to form a compound with the formula MCl2.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

Accepted Answer

A)  Sr
B)  K
C)  Na
D)  Ra
E)  BeF) A) and E)
G) C) and D)

Question 5

Which element is solid at room temperature?

Accepted Answer

A)  Cl2
B)  F2
C)  Br2
D)  I2
E)  H2F) B) and E)
G) A) and D)

Question 6

All of the following noble gases have a ns2np6 valence electron configuration except ________.

Accepted Answer

A)  helium
B)  radon
C)  neon
D)  krypton
E)  All noble gases have the ns2np6 valence electron configuration.F) All of the above
G) B) and C)

Question 7

Which one of the following is a metalloid?

Accepted Answer

A)  Si
B)  S
C)  Cl
D)  In
E)  LiF) C) and E)
G) A) and E)

Question 8

Write a balanced reaction between magnesium metal and hydrochloric acid.

Accepted Answer

Mg (s)+ 2H...

Question 9

All of the following reactions concerning alkali metals are correct except ________.

Accepted Answer

A)  2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g) 
B)  Na (s) + O2 (g) → NaO2 (s) 
C)  2Na (s) + H2 (g) → 2NaH (s) 
D)  2Na (s) + S (s) → Na2S (s) 
E)  2Na (s) + Cl2 (g) → 2NaCl (s) F) A) and D)
G) D) and E)

Question 10

Alkali metals tend to be more reactive than alkaline earth metals because ________.

Accepted Answer

A)  alkali metals have lower densities
B)  alkali metals have lower melting points
C)  alkali metals have greater electron affinities
D)  alkali metals have lower ionization energies
E)  Alkali metals are not more reactive than alkaline earth metals.F) A) and B)
G) All of the above

Question 11

Xenon can form compounds with fluorine.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following noble gases is not reactive?

Accepted Answer

A)  xenon and argon
B)  helium and neon
C)  xenon only
D)  xenon, krypton, and argon
E)  None of the above are reactiveF) A) and B)
G) A) and C)

Question 13

The ion with the smallest diameter is ________.

Accepted Answer

A)  Li+
B)  Na+
C)  K+
D)  Rb+
E)  Cs+F) None of the above
G) C) and D)

Question 14

Electron affinity measures how easily an atom gains an electron.

Accepted Answer

A) True 
 B)False

Question 15

Ozone is a a(n) ________ of oxygen.

Accepted Answer

A)  isotope
B)  allotrope
C)  precursor
D)  peroxide
E)  free radicalF) B) and E)
G) All of the above

Question 16

Which of the following correctly represents the second ionization of calcium?

Accepted Answer

A)  Ca (g) → Ca+ (g) + e-
B)  Ca+ (g) → Ca2+ (g) + e-
C)  Ca- (g) + e- → Ca2- (g) 
D)  Ca+ (g) + e- → Ca2+ (g) 
E)  Ca+ (g) + e- → Ca (g) F) A) and E)
G) A) and B)

Question 17

Which one of the following is not true about the alkali metals?

Accepted Answer

A)  They are low density solids at room temperature.
B)  They all readily form ions with a +1 charge.
C)  They all have 2 electrons in their valence shells.
D)  They are very reactive elements.
E)  They have the lowest first ionization energies of the elements.F) All of the above
G) A) and B)

Question 18

The effective nuclear charge in an atom is proportional to the number of nuclear protons.

Accepted Answer

A) True 
 B)False

Question 19

________ is isoelectronic with scandium.

Accepted Answer

A)  Cr3+
B)  Mn5+
C)  Mn
D)  Mn4-
E)  K+F) A) and B)
G) None of the above

Question 20

When two elements combine to form a compound,the ________ the difference in metallic character between the two elements,the ________ the likelihood that the compound will be a ________ at room temperature.

Accepted Answer

A)  smaller, greater, solid
B)  greater, greater, liquid
C)  greater, greater, solid
D)  smaller, greater, liquid
E)  greater, smaller, solidF) B) and D)
G) B) and C)

Exam 7: Periodic Properties of the Elements

Which element is solid at room temperature?

Correct Answer
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Electron affinity measures how easily an atom gains an electron.

Correct Answer
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Xenon can form compounds with fluorine.

Correct Answer
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When two elements combine to form a compound,the the difference in metallic character between the two elements,the the likelihood that the compound will be a at room temperature.

Correct Answer
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The effective nuclear charge in an atom is proportional to the number of nuclear protons.

Correct Answer
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Which of the following elements can exist as an allotrope?

Correct Answer
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Which one of the following is a metalloid?

Correct Answer
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Element M reacts with chlorine to form a compound with the formula MCl₂.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

Correct Answer
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Ozone is a a(n) ________ of oxygen.

Correct Answer
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Which one of the following is not true about the alkali metals?

Correct Answer
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Which of the following noble gases is not reactive?

Correct Answer
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________ is isoelectronic with scandium.

Correct Answer
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Correct Answer
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The ion with the smallest diameter is ________.

Correct Answer
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Which of the following correctly represents the second ionization of calcium?

Correct Answer
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The alkali metal that is naturally radioactive is ________.

Correct Answer
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Alkali metals tend to be more reactive than alkaline earth metals because ________.

Correct Answer
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All of the following noble gases have a ns²np⁶ valence electron configuration except ________.

Correct Answer
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All of the following reactions concerning alkali metals are correct except ________.

Correct Answer
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Write a balanced reaction between magnesium metal and hydrochloric acid.

Correct Answer
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Mg (s)+ 2H...
View Answer

Exam 7: Periodic Properties of the Elements

Which element is solid at room temperature?

Correct AnswerverifiedShow Answer

Electron affinity measures how easily an atom gains an electron.

Correct AnswerverifiedShow Answer

Xenon can form compounds with fluorine.

Correct AnswerverifiedShow Answer

When two elements combine to form a compound,the ________ the difference in metallic character between the two elements,the ________ the likelihood that the compound will be a ________ at room temperature.

Correct AnswerverifiedShow Answer

The effective nuclear charge in an atom is proportional to the number of nuclear protons.

Correct AnswerverifiedShow Answer

Which of the following elements can exist as an allotrope?

Correct AnswerverifiedShow Answer

Which one of the following is a metalloid?

Correct AnswerverifiedShow Answer

Element M reacts with chlorine to form a compound with the formula MCl2.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

Correct AnswerverifiedShow Answer

Ozone is a a(n) ________ of oxygen.

Correct AnswerverifiedShow Answer

Which one of the following is not true about the alkali metals?

Correct AnswerverifiedShow Answer

Which of the following noble gases is not reactive?

Correct AnswerverifiedShow Answer

________ is isoelectronic with scandium.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The ion with the smallest diameter is ________.

Correct AnswerverifiedShow Answer

Which of the following correctly represents the second ionization of calcium?

Correct AnswerverifiedShow Answer

The alkali metal that is naturally radioactive is ________.

Correct AnswerverifiedShow Answer

Alkali metals tend to be more reactive than alkaline earth metals because ________.

Correct AnswerverifiedShow Answer

All of the following noble gases have a ns2np6 valence electron configuration except ________.

Correct AnswerverifiedShow Answer

All of the following reactions concerning alkali metals are correct except ________.

Correct AnswerverifiedShow Answer

Write a balanced reaction between magnesium metal and hydrochloric acid.

Correct AnswerverifiedMg (s)+ 2H...View AnswerShow Answer

Correct Answer
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When two elements combine to form a compound,the the difference in metallic character between the two elements,the the likelihood that the compound will be a at room temperature.

Correct Answer
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Correct Answer
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Element M reacts with chlorine to form a compound with the formula MCl₂.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

Correct Answer
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Correct Answer
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All of the following noble gases have a ns²np⁶ valence electron configuration except ________.

Correct Answer
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Correct Answer
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Correct Answer
verified
Mg (s)+ 2H...
View Answer