Which of the following Lewis structures does NOT contain a coordinate covalent bond?
(A)
H O
| +
H H
(B)
H H
| N H
H +
(C)
:O::C::O:
(D)
:O:
. - HSC - SSCE Chemistry - Question 16 - 2010 - Paper 1
Question 16
Which of the following Lewis structures does NOT contain a coordinate covalent bond?
(A)
H O
| +
H H
(B)
H H
| N H
H... show full transcript
Worked Solution & Example Answer:Which of the following Lewis structures does NOT contain a coordinate covalent bond?
(A)
H O
| +
H H
(B)
H H
| N H
H +
(C)
:O::C::O:
(D)
:O:
. - HSC - SSCE Chemistry - Question 16 - 2010 - Paper 1
Step 1
Identify the Lewis Structures
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Answer
We have four Lewis structures to analyze: (A), (B), (C), and (D).
Step 2
Analyze Structure (A)
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Answer
In structure (A), the oxygen atom is bonded to both hydrogen atoms and has a positive charge. This structure does not contain a coordinate covalent bond, as both electrons in the bond are contributed by the hydrogen atoms.
Step 3
Analyze Structure (B)
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Answer
In structure (B), the nitrogen atom has a coordinate covalent bond with one hydrogen atom, as it donates a pair of electrons to form the bond. Hence, this structure contains a coordinate covalent bond.
Step 4
Analyze Structure (C)
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Answer
In structure (C), the double bonds between the oxygen and carbon atoms indicate that one of the bonds can be considered a coordinate covalent bond. This structure contains a coordinate covalent bond.
Step 5
Analyze Structure (D)
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Answer
In structure (D), both bonds between the oxygen atoms are regular covalent bonds, with no coordinate covalent bonds present.
Step 6
Conclusion
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Answer
After analyzing all structures, the one that does NOT contain a coordinate covalent bond is structure (C). Thus, the answer is (C).
