Question 1

Predict the products for the reaction of the following set of reactants. BaO(s)  + CO2(g)  →

Accepted Answer

A)   BaCO3(s) 
B)   Ba(s)  + CO(g)  + O2(g) 
C)   BaO2(s)  + CO(g) 
D)   Ba2CO3(s) 
E)   BaC2(s)  + O2(g) F) A) and D)
G) A) and C) A

Question 2

Predict the products for the reaction of the following set of reactants. Mg(s)  + Cl2(g)  →

Accepted Answer

A)   MgCl(s) 
B)   MgCl2(s) 
C)   MgCl(l) 
D)   MgCl2(l) 
E)   MgCl2(aq) F) None of the above
G) B) and C)

Question 3

Which of the following will have the highest boiling point?

Accepted Answer

A)   O2
B)   Cl2
C)   Br2
D)   I2
E)   XeF) A) and E)
G) A) and D)

Question 4

Although the periodic table is organized according to the atomic numbers of the elements, chemists are more interested in the arrangement of the electrons for their studies. Which of the following statements about the electron configurations and their quantum numbers is correct?

Accepted Answer

A)   The size of an atom is associated with the angular momentum quantum number.
B)   The valence electrons of atoms in a particular group have the same principal and angular momentum quantum numbers.
C)   The valence electrons of atoms in a particular group have the same angular momentum quantum number but have different principal quantum numbers.
D)   Quantum numbers for the electrons tell us little about the relative energies of the electrons.
E)   None of these choices are correct.F) C) and D)
G) A) and D)

Question 5

Comparing neon with xenon, one would expect neon to have a ________ density at STP, and a ________ normal boiling point than xenon.

Accepted Answer

A)   higher, higher
B)   higher, lower
C)   lower, higher
D)   lower, lower
E)   Since they are both noble gases, their densities and boiling points will be very similar.F) A) and C)
G) C) and D)

Question 6

The acidity of oxides of main group elements increases down a group, from top to bottom.

Accepted Answer

A) True 
 B)False

Question 7

Hydrogen fluoride is used

Accepted Answer

A)   in the manufacture of steel.
B)   in the synthesis of cryolite for aluminum production.
C)   as an oxidizing agent.
D)   as a disinfectant.
E)   as a mouthwash.F) All of the above
G) C) and E)

Question 8

According to the phase diagram of carbon, what pressure and temperature conditions, if any, are needed in order for diamond to be the stable phase?

Accepted Answer

A)   low pressure, low temperature
B)   low pressure, high temperature
C)   high pressure, low temperature
D)   high pressure, high temperature
E)   Actually, diamond is not stable under any conditions.F) None of the above
G) A) and C)

Question 9

Oxides of group 1A (1) and 2A (2) elements are strongly acidic.

Accepted Answer

A) True 
 B)False

Question 10

Predict the products for the following set of reactants. K2O(s)  + H2O(l)  →

Accepted Answer

A)   K+(aq)  + OH-(aq)  + H2(g) 
B)   K+(aq)  + OH-(aq) 
C)   K+(aq)  + H2(g)  + O2(g) 
D)   KH(s)  + O2(g) 
E)   K+(aq)  + OH-(aq)  + H2O2(aq) F) C) and E)
G) C) and D)

Question 11

Bromine will form compounds with each of the other elements in Period 4 of the periodic table. How does the type of bonding in the compounds change as one moves from potassium bromide to selenium bromide?

Accepted Answer

A)   ionic to polar covalent
B)   polar covalent to ionic
C)   polar covalent to non-polar covalent
D)   coordinate covalent to polar covalent
E)   None of these choices are correct.F) All of the above
G) A) and B)

Question 12

Group 1A elements are less reactive than group 2A elements.

Accepted Answer

A) True 
 B)False  False

Question 13

Predict the products formed from the following set of reactants. FeSe(s)  + HCl(aq)  →

Accepted Answer

A)   Se(s)  + FeCl2(aq) 
B)   SeCl2(s)  + Fe(s)  + H2(g) 
C)   FeH2(s)  + SeCl2(l) 
D)   H2Se(g)  + Fe(s)  + Cl2(g) 
E)   H2Se(g)  + FeCl2(aq) F) A) and E)
G) B) and D) E

Question 14

Which of the alkali metals has the highest melting point?

Accepted Answer

A)   Li
B)   Na
C)   K
D)   Rb
E)   CsF) B) and D)
G) C) and D)

Question 15

Boron has 3 valence electrons. Which of the following processes is involved in boron's achieving a complete outer shell?

Accepted Answer

A)   formation of a B3+ cation
B)   formation of bridge bonds
C)   formation of 3+ cation 
B)   formation of bridge bonds 
C)   formation of   -bonds using its d-orbitals 
D)   formation of   -bonds using sp3-orbitals 
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > -bonds using its d-orbitals
D)   formation of 3+ cation 
B)   formation of bridge bonds 
C)   formation of   -bonds using its d-orbitals 
D)   formation of   -bonds using sp3-orbitals 
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > -bonds using sp3-orbitals
E)   None of these choices are correct.F) B) and E)
G) B) and D)

Question 16

Which of the following hydroxides will be the most basic?

Accepted Answer

A)   B(OH) 3
B)   Al(OH) 3
C)   Ga(OH) 3
D)   In(OH) 3
E)   TlOHF) A) and B)
G) B) and E)

Question 17

The acidity of oxides of main group elements increases across a period from left to right.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following oxides is most basic?

Accepted Answer

A)   As2O3
B)   P4O10
C)   Sb2O3
D)   Sb2O5
E)   NO2F) C) and D)
G) A) and D)

Question 19

Select the element with the highest first ionization energy.

Accepted Answer

A)   Mg
B)   Ca
C)   Ba
D)   Ra
E)   KF) C) and D)
G) B) and C)

Question 20

Predict the products for the reaction of the following set of reactants. MgCO3(s)  + heat →

Accepted Answer

A)   Mg(s)  + CO(g) 
B)   Mg(s)  + CO2(g) 
C)   MgO(s)  + CO(g) 
D)   MgO(s)  + CO2(g) 
E)   no reactionF) A) and C)
G) A) and E)

Exam 14: Periodic Patterns in the Main-Group Elements

Predict the products for the reaction of the following set of reactants. BaO(s) + CO2(g) →

Correct AnswerverifiedA

Predict the products for the reaction of the following set of reactants. Mg(s) + Cl2(g) →

Correct AnswerverifiedShow Answer

Which of the following will have the highest boiling point?

Correct AnswerverifiedShow Answer

Although the periodic table is organized according to the atomic numbers of the elements, chemists are more interested in the arrangement of the electrons for their studies. Which of the following statements about the electron configurations and their quantum numbers is correct?

Correct AnswerverifiedShow Answer

Comparing neon with xenon, one would expect neon to have a ________ density at STP, and a ________ normal boiling point than xenon.

Correct AnswerverifiedShow Answer

The acidity of oxides of main group elements increases down a group, from top to bottom.

Correct AnswerverifiedShow Answer

Hydrogen fluoride is used

Correct AnswerverifiedShow Answer

According to the phase diagram of carbon, what pressure and temperature conditions, if any, are needed in order for diamond to be the stable phase?

Correct AnswerverifiedShow Answer

Oxides of group 1A (1) and 2A (2) elements are strongly acidic.

Correct AnswerverifiedShow Answer

Predict the products for the following set of reactants. K2O(s) + H2O(l) →

Correct AnswerverifiedShow Answer

Bromine will form compounds with each of the other elements in Period 4 of the periodic table. How does the type of bonding in the compounds change as one moves from potassium bromide to selenium bromide?

Correct AnswerverifiedShow Answer

Group 1A elements are less reactive than group 2A elements.

Correct AnswerverifiedFalse

Predict the products formed from the following set of reactants. FeSe(s) + HCl(aq) →

Correct AnswerverifiedE

Which of the alkali metals has the highest melting point?

Correct AnswerverifiedShow Answer

Boron has 3 valence electrons. Which of the following processes is involved in boron's achieving a complete outer shell?

Correct AnswerverifiedShow Answer

Which of the following hydroxides will be the most basic?

Correct AnswerverifiedShow Answer

The acidity of oxides of main group elements increases across a period from left to right.

Correct AnswerverifiedShow Answer

Which of the following oxides is most basic?

Correct AnswerverifiedShow Answer

Select the element with the highest first ionization energy.

Correct AnswerverifiedShow Answer

Predict the products for the reaction of the following set of reactants. MgCO3(s) + heat →

Correct AnswerverifiedShow Answer

Predict the products for the reaction of the following set of reactants. BaO(s) + CO₂(g) →

Correct Answer
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Predict the products for the reaction of the following set of reactants. Mg(s) + Cl₂(g) →

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Comparing neon with xenon, one would expect neon to have a density at STP, and a normal boiling point than xenon.

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Predict the products for the following set of reactants. K₂O(s) + H₂O(l) →

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False

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E

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Predict the products for the reaction of the following set of reactants. MgCO₃(s) + heat →

Correct Answer
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