Chemistry: Matter and Change

Section 3: Molecular Structures

Self Check Quizzes

1
In forming a molecular structure, each atom should have ________ electrons around it unless there is some specific reason why this cannot be achieved.
A)2
B)4
C)6
D)8
2
How many lone pairs of electrons are present in a molecule of water?
A)1
B)2
C)3
D)4
3
Which of the following atoms will be an exception to the octet rule in a molecule?
A)O
B)N
C)C
D)B
4
Of the models displayed, which shows all the valence electrons?

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A)molecular formula
B)space-filling model
C)Lewis structure
D)structural formula
5
In a coordinate covalent bond, ________.

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A)one atom donates both electrons to the bond.
B)each atom donates one electron to the bond.
C)atoms form a double bond.
D)atoms share more than one pair of electrons.
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