AnswersChemistry - SC3210 A-CRNomenclature of Ionic Compounds

Metallic Bonding Answers

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The diagram is a representation of the electron sea model. Which statement best describes what is happening in this model?

Question illustration
A
The electrons are transferred to the innermost nuclei of metal atoms.
B
The electrons are transferred to the outermost nuclei of metal atoms.
C
The electrons are moving easily between the nuclei of metal atoms.
D
The electrons are in fixed positions between the nuclei of metal atoms.
2
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Which statement best describes the basis of the band theory of metallic bonding?

A
Molecular orbitals overlap to form atomic orbitals in which the valence electrons of the atoms travel.
B
Molecular orbitals overlap to form atomic orbitals in which all electrons of the atoms travel.
C
Atomic orbitals overlap to form molecular orbitals in which the valence electrons of the atoms travel.
D
Atomic orbitals overlap to form molecular orbitals in which all electrons of the atoms travel.
3

Which property does a metal with a large number of free-flowing electrons most likely have?

A
very hard
B
very brittle
C
poor conductivity
D
good conductivity
4

In a piece of metal, what holds the atoms together?

A
the positive charges of the nuclei and the localized electrons around them
B
the negative charges of the nuclei and the localized electrons around them
C
the positive charges of the nuclei and the negative charges of delocalized electrons
D
the negative charges of the nuclei and the positive charges of delocalized electrons
5

Which element is likely to be the best conductor of electricity?

A
copper
B
lithium
C
iodine
D
silicon
6

Which combination of factors is most suitable for increasing the electrical conductivity of metals?

A
more valence electrons and larger atomic radius
B
fewer valence electrons and larger atomic radius
C
more valence electrons and smaller atomic radius
D
fewer valence electrons and smaller atomic radius
7

Which characteristics of metal atoms help explain why valence electrons in a metal are delocalized?

A
Metal atoms are large and have high electronegativities.
B
Metal atoms are small and have low electronegativities.
C
Metal atoms are large and have low electronegativities.
D
Metal atoms are small and have high electronegativities.
8

What is another name for the molecular orbital theory of bonding in metals?

A
band theory
B
ionic bond theory
C
covalent bond theory
D
electron bond theory
9

Which of the following metal atoms would have the highest conductivity?

A
the atom with the smallest radius and the fewest valence electrons
B
the atom with the smallest radius and the most valence electrons
C
the atom with the largest radius and the fewest valence electrons
D
the atom with the largest radius and the most valence electrons
10

Which property is true for metals?

A
localized electrons
B
high electronegativity
C
low ionization energies
D
tightly held valence electrons

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