객관식
Which of the following is the correct Lewis structure for the cyanate ion ?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best describes the Lewis structure of (cyclobutadiene)?
A
A four-membered carbon ring with all single bonds and each carbon bonded to two hydrogen atoms
B
A four-membered carbon ring with alternating single and double bonds, each carbon bonded to one hydrogen atom
C
A branched structure with three carbons in a chain and one carbon attached as a side group, each carbon bonded to one hydrogen atom
D
A linear chain of four carbon atoms, each with two hydrogen atoms attached
검증된 단계별 안내1
Identify the molecular formula given: C\_4H\_4, which corresponds to cyclobutadiene, a cyclic compound with four carbon atoms and four hydrogen atoms.
Recall that cyclobutadiene is a cyclic conjugated diene, meaning it contains alternating double and single bonds in a four-membered ring structure.
Draw a square to represent the four carbon atoms connected in a ring. Then, add alternating double and single bonds between the carbons to reflect the conjugated diene system.
Attach one hydrogen atom to each carbon atom because the carbons form two bonds with neighboring carbons (one single and one double bond), leaving one valence electron available for bonding with hydrogen.
Verify that the Lewis structure satisfies the octet rule for each carbon and that the total number of hydrogens matches the molecular formula C\_4H\_4.
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