Question 1

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

Accepted Answer

A)   P+ (g)  + e- - P (g) 
B)   P (g)  -P+ (g)  + e-
C)   P+ (g)  + e-  -P2+ (g) 
D)   P-  (g)  + e-  -P2-  (g) 
E)   P+ (g)  -P2+ (g)  + e-

Question 2

Which element is solid at room temperature?

Accepted Answer

A)   I2 
B)   Br2 
C)   H2 
D)   F2 
E)   Cl2

Question 3

Screening by the valence electrons in atoms is _ .

Accepted Answer

A)   more efficient than that by core electrons
B)   less efficient than that by core electrons
C)   responsible for a general increase in atomic radius going across a period
D)   essentially identical to that by core electrons
E)   both more efficient than that by core electrons and responsible for a general increase in atomic radius going across a period

Question 4

Of the elements below, has the largest first ionization energy.

Accepted Answer

A)   Na
B)   H
C)   Rb
D)   K
E)   Li

Question 5

All of the following are ionic compounds except .

Accepted Answer

A)   NaCl
B)   Li3N
C)   Na2SO4 
D)   SiO2 
E)   K2O

Question 6

Na reacts with element X to form an ionic compound with the formula Na3X. Ca will react with X to form .

Accepted Answer

A)   Ca3X
B)   CaX2 
C)   Ca2X3 
D)   Ca3X2 
E)   CaX

Question 7

Which one of the following elements has an allotrope that is produced in the upper atmosphere by lightning?

Accepted Answer

A)   He
B)   N
C)   S
D)   Cl
E)   O

Question 8

The atomic radius of main- group elements generally increases down a group because .

Accepted Answer

A)   the principal quantum number of the valence orbitals increases
B)   effective nuclear charge decreases down a group
C)   effective nuclear charge increases down a group
D)   effective nuclear charge zigzags down a group
E)   both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases

Question 9

The reaction of a metal with a nonmetal produces a(n)  _.

Accepted Answer

A)   salt
B)   oxide
C)   acid
D)   base
E)   hydroxide

Question 10

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

Accepted Answer

A)   metallic
B)   a liquid at room temperature
C)   a gas at room temperature
D)   a solid at room temperature
E)   nonmetallic

Question 11

Most of the elements on the periodic table are .

Accepted Answer

A)   metalloids
B)   nonmetals
C)   liquids
D)   gases
E)   metals

Question 12

have the lowest first ionization energies of the groups listed.

Accepted Answer

A)   Halogens
B)   Alkali metals
C)   Transition elements
D)   Noble gases
E)   Alkaline earth metals

Question 13

Of the alkaline earth metals, which two elements are the least reactive?

Accepted Answer

The answer of Of the alkaline earth metals, which two...

Question 14

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

Accepted Answer

A)   Al- (g)  + e-  -Al2-  (g) 
B)   Al+ (g)  + e-  -Al2+ (g) 
C)   Al+ (g)  + e- - Al (g) 
D)   Al (g)  -Al+ (g)  + e-
E)   Al+ (g)  - Al2+ (g)  + e-

Question 15

An added electron to the element bromine goes into which orbital ?

Accepted Answer

The answer of An added electron to the element bromine...

Question 16

Which of the following generalizations cannot be made with regard to reactions of alkali metals? (The symbol M represents any one of the alkali metals.)

Accepted Answer

A)   M (s)  + O2 (g)  - MO2 (s) 
B)   2M (s)  + S (s)  -M2S (s) 
C)   2M (s)  + Cl2 (g)  - 2MCl (s) 
D)   2M (s)  + 2H2O (l)  - 2MOH (aq)  + H2 (g) 
E)   2M (s)  + H2 (g)  - 2MH (s)

Question 17

Which one of the following atoms has the largest radius?

Accepted Answer

A)   I
B)   Ca
C)   Co
D)   Ba
E)   Sr

Question 18

Element M reacts with oxygen to form an oxide with the formula MO. When MO is dissolved in water, the resulting solution is basic. Element M could be _.

Accepted Answer

A)   Na
B)   S
C)   N
D)   Ba
E)   C

Question 19

Of the following elements, has the most negative electron affinity.

Accepted Answer

A)   Li
B)   F
C)   N
D)   Na
E)   Be

Question 20

Consider the following properties of an element:
(i)  It is solid at room temperature.
(ii)  It easily forms an oxide when exposed to air.
(iii)  When it reacts with water, hydrogen gas evolves.
(iv)  It must be stored submerged in oil. Which element fits the above description the best?

Accepted Answer

A)   magnesium
B)   sodium
C)   sulfur
D)   mercury
E)   copper

Exam 7: Periodic Properties of the Elements

Most of the elements on the periodic table are .

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Of the alkaline earth metals, which two elements are the least reactive?

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Which one of the following elements has an allotrope that is produced in the upper atmosphere by lightning?

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Element M reacts with oxygen to form an oxide with the formula MO. When MO is dissolved in water, the resulting solution is basic. Element M could be _.

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Which element is solid at room temperature?

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

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All of the following are ionic compounds except .

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Of the elements below, has the largest first ionization energy.

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Of the following elements, has the most negative electron affinity.

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Which one of the following atoms has the largest radius?

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An added electron to the element bromine goes into which orbital ?

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The reaction of a metal with a nonmetal produces a(n) _.

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Na reacts with element X to form an ionic compound with the formula Na3X. Ca will react with X to form .

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have the lowest first ionization energies of the groups listed.

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

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The atomic radius of main- group elements generally increases down a group because .

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Consider the following properties of an element: (i) It is solid at room temperature. (ii) It easily forms an oxide when exposed to air. (iii) When it reacts with water, hydrogen gas evolves. (iv) It must be stored submerged in oil. Which element fits the above description the best?

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Screening by the valence electrons in atoms is _ .

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

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Which of the following generalizations cannot be made with regard to reactions of alkali metals? (The symbol M represents any one of the alkali metals.)

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Na reacts with element X to form an ionic compound with the formula Na₃X. Ca will react with X to form .

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