객관식
Which of the following best represents the correct Lewis structure for the formate ion, ?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best describes the correct Lewis structure for (acrylonitrile, )?
A
The structure has a carbon-carbon double bond between the first and second carbon atoms, a carbon-nitrogen triple bond between the second and third atoms, and all atoms have complete octets with no formal charges.
B
The structure has a carbon-carbon triple bond between the first and second carbon atoms, a carbon-nitrogen single bond between the second and third atoms, and the first carbon has an incomplete octet.
C
The structure has a carbon-carbon single bond between the first and second carbon atoms, a carbon-nitrogen double bond between the second and third atoms, and the nitrogen atom has a positive formal charge.
D
The structure has all single bonds between the carbon and nitrogen atoms, with each atom having a lone pair to complete the octet.
검증된 단계별 안내1
Identify the molecular formula and the connectivity of acrylonitrile, which is C\_3H\_3N, and understand that it consists of a three-atom carbon chain with a nitrogen atom attached to the last carbon.
Recall that acrylonitrile contains a nitrile functional group, characterized by a carbon-nitrogen triple bond, and an alkene group, characterized by a carbon-carbon double bond.
Draw the carbon chain with the first and second carbons connected by a double bond (C=C), and the second and third atoms connected by a triple bond (C≡N), ensuring that the nitrogen is at the terminal position.
Check the octet rule for each atom: each carbon and nitrogen should have eight electrons around them, counting bonding and lone pairs, and verify that there are no formal charges on any atom.
Confirm that the structure matches the description: a carbon-carbon double bond between the first and second carbons, a carbon-nitrogen triple bond between the second carbon and nitrogen, and all atoms having complete octets with no formal charges.
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