Intermolecular Forces — Unit test Answers
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What is another name for the molecular orbital theory of bonding in metals?
A
band theoryB
ionic bond theoryC
covalent bond theoryD
electron bond theory42
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Which statement correctly describes the phosphate ion, ?
A
It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion.B
It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom.C
It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion.D
It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.43
Which statement is generally true about CaCl2?
A
It has only metallic bonds between the atoms.B
It has only covalent bonds between the atoms.C
Its bonds are formed by large differences in electronegativity.D
Its bonds are formed by small differences in electronegativity.44
How is electronegativity related to covalent bonding?
A
Atoms must have similar electronegativities in order to share electrons in a covalent bond.B
Atoms must have very different electronegativities in order to transfer electrons in a covalent bond.C
Atoms must have similar electronegativities in order to transfer electrons in a covalent bond.D
Atoms must have very different electronegativities in order to share electrons in a covalent bond.45
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.46
Which is a characteristic of the electron sea model for metallic bonding?
A
Molecular orbitals overlap to produce bands.B
Electrons flow easily between metal nuclei.C
Electrons are in fixed positions in the orbitals.D
Atomic nuclei are arranged in an irregular pattern.47
Which pair of elements will form an ionic bond?
A
N and OB
K and BrC
C and ClD
Fe and NiDid you find these answers helpful?
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