AnswersISA CA-Chemistry ATypes of Chemical Bonds

Types of Chemical Bonds — Unit test Answers

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1
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What is the ratio of Fe ions to O ions in a neutral compound?

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A
1:2
B
2:1
C
2:3
D
3:2
2
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Based on its location in the periodic table, what can most likely be predicted about sulfur?

A
It has four valence electrons available for bonding.
B
It has four nonbonding electrons.
C
It has six valence electrons available for bonding.
D
It has six nonbonding electrons.
3

What is the chemical formula for copper(II) sulfate?

A
CuSO
Option A
B
CuSO
Option B
C
CuS
D
CuS
Option D
4

In the Lewis dot structure for NH3, the central atom of the molecule has three atoms bonded to it and one lone pair of electrons.The shape of an NH3 molecule is

Question illustration
A
bent.
B
tetrahedral.
C
trigonal planar.
D
trigonal pyramidal.
5

Which element has the lowest ionization energy?

Question illustration
A
argon (Ar)
B
bromine (Br)
C
cesium (Cs)
D
nickel (Ni)
6

Which best describes why NH4+ can form an ionic bond with Cl–?

A
Its outermost shell gains one or more electrons from Cl–.
B
Its positive charge is attracted to the negative charge of Cl–.
C
It has a negative charge that is spread over the entire ion.
D
It has a nitrogen atom that is strongly attracted to Cl–.
7

Which molecular geometry is least likely to occur with sp3 hybridization?

A
tetrahedral
B
trigonal planar
C
bent
D
trigonal pyramidal
8

Which compound most likely contains polar covalent bonds?

A
NaCl
B
AlF3
C
Br2
D
NF3
9

Which is a property of covalent compounds?

A
They ionize in solution.
B
They tend to be very hard.
C
They have a low boiling point.
D
They have a high melting point.
10

Which of the following do Lewis structures help us understand?

A
the exact structure of a molecule
B
the number of electrons that are involved in the bonding of the molecule
C
the total number of electrons in a molecule
D
how electrons attract other electrons in a molecule
11

Which is the IUPAC name of O3?

A
dioxide
B
oxygen
C
trioxygen
D
monoxide
12

Which of the following could form an ionic bond with an anion?

A
Hg22+
B
NO2–
C
SO32–
D
Ar
13

What is a three-dimensional structure that represents the alternating pattern of particles in a crystal?

A
a polyatomic ion
B
a crystal lattice
C
a covalent bond
D
a formula unit
14

Which type of bonding involves the complete transfer of a valence electron from a less electronegative atom to a more electronegative one?

A
ionic bonding
B
metallic bonding
C
covalent bonding
D
hydrogen bonding
15

What name should be used for the ionic compound KOH?

A
potassium oxide
B
potassium oxygen hydride
C
potassium hydroxide
D
potassium hydrogen oxide

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