AnswersChemistry - SC3210 A-CRTypes of Chemical Bonds

Ionic Bonding Answers

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Which pair of ions can form an ionic bond with each other and why?

A
Cu and Ag; They are both metal ions.
Option A
B
S and O; They have like charges.
Option B
C
Br and At; They are both halogen ions.
Option C
D
Li and Br; They have unlike charges.
Option D
2
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The diagram below shows the atoms involved in forming table salt.Which statement best describes what happens next?

Question illustration
A
Sodium becomes an anion by losing an electron to chlorine.
B
Chlorine becomes a cation by losing an electron to sodium.
C
Sodium becomes a cation by gaining an electron from chlorine.
D
Chlorine becomes an anion by gaining an electron from sodium.
3

Which of these best describes an ionic bond?

A
a force that keeps two large molecules together
B
an attraction that occurs between two nonmetals
C
a force that holds two oppositely charged ions together
D
an electromagnetic attraction that occurs between two metals
4

Which statement is true about a polyatomic ion?

A
It forms metallic bonds with other ions.
B
It forms covalent bonds with other ions.
C
It is made of atoms that are covalently bonded together.
D
It has a charge that is distributed over only part of the ion.
5

Which pair of elements will form an ionic bond?

A
N and O
B
K and Br
C
C and Cl
D
Fe and Ni
6

The table lists the lattice energies of some compounds.CompoundLattice Energy (kJ/mol)LiF –1,036LiCl –853NaF –923KF –821NaCl –786Which statement about crystal lattice energy is best supported by the information in the table?

A
The lattice energy increases as cations get smaller, as shown by LiF and KF.
B
The lattice energy increases as the cations get larger, as shown by LiF and LiCl.
C
The lattice energy decreases as cations get smaller, as shown by NaCl and NaF.
D
The lattice energy decreases as the cations get smaller, as shown by NaF and KF.
7

Which statement describes a step in the formation of an ionic bond?

A
An attraction occurs between two ions that have the same charge.
B
A metal atom forms a cation, and a nonmetal atom forms an anion.
C
A more electronegative atom transfers electrons to a less electronegative atom.
D
A metal pulls electrons from another metal and produces a force of attraction.
8

Each model shows bonding between a pair of atoms.Model A Model BWhich statement best explains how the models differ?

Question illustration
A
Model A shows the formation of ions, and model B does not show the formation of ions.
B
Model A does not show the formation of ions, and model B shows the sharing of electrons.
C
Model A shows the sharing of electrons, and model B shows the formation of ions.
D
Model A shows the transfer of an electron, and model B shows the sharing of electrons.
9

What leads to the formation of an ionic bond with Hg2+?

A
the attraction of a noble gas
B
the attraction of an NH4+ ion
C
the attraction of a group 1 element
D
the attraction of an SO42– ion
10

Which property best indicates that a compound contains an ionic bond?

A
It is insoluble in water.
B
It can be easily flattened.
C
It has a low boiling point.
D
It conducts electricity when molten.

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