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Drawing Lewis Dot Structures • Chemistry
Set 4 — Mastery
What is the total number of valence electrons in \text{CO}_{2}?
16
12
18
14
How many lone pairs are present in the Lewis structure of \text{NH}_{3}?
1
2
0
3
What is the formal charge on the central atom in \text{H}_{2}\text{O}?
0
1
-1
2
In the Lewis structure of \text{CH}_{4}, how many total electron pairs surround the carbon atom?
4
2
6
8
Which of the following molecules has a resonance structure? \text{SO}{2}, \text{H}{2}\text{O}, or \text{CH}_{4}?
\text{SO}_{2}
\text{H}_{2}\text{O}
\text{CH}_{4}
None
What is the molecular geometry of \text{BF}_{3}?
Trigonal planar
Tetrahedral
Linear
Bent
For the molecule \text{N}_{2}, how many total valence electrons are present?
10
8
6
4
What type of bond exists between the two carbon atoms in \text{C}{2}\text{H}{2}?
Triple bond
Double bond
Single bond
Quadruple bond
In the Lewis structure of \text{O}_{2}, how many unshared pairs of electrons are on each oxygen atom?
2
1
0
3
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Which of the following correctly represents the Lewis structure for \text{N}_{2}\text{O}?
\text{N} \equiv \text{N} - \text{O}
\text{N} - \text{N} - \text{O}
\text{N} = \text{N} - \text{O}
\text{N} - \text{N} + \text{O}