Multiple Choice
Which of the following is the correct Lewis dot structure for the neutral compound Cl2O2, given that the arrangement of atoms is Cl–O–O–Cl?
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11. Bonding & Molecular Structure
Lewis Dot Structures: Neutral Compounds
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Which of the following statements correctly describes the Lewis dot structure of carbon tetrachloride (CCl_4)?
A
The central carbon atom forms four single bonds with four chlorine atoms, and each chlorine atom has two lone pairs.
B
The central carbon atom forms four single bonds with four chlorine atoms, and each chlorine atom has three lone pairs.
C
The central carbon atom forms one triple bond with one chlorine atom and three single bonds with the other chlorine atoms.
D
The central carbon atom forms two double bonds with two chlorine atoms, and each chlorine atom has two lone pairs.
Verified step by step guidance1
Identify the central atom in carbon tetrachloride (CCl_4), which is carbon, because it is less electronegative and can form multiple bonds.
Recall that carbon has 4 valence electrons and chlorine has 7 valence electrons each; the total valence electrons must be accounted for in the Lewis structure.
Determine the bonding: carbon typically forms four single covalent bonds to complete its octet, so it will form four single bonds with four chlorine atoms.
Assign lone pairs to chlorine atoms: each chlorine atom needs three lone pairs (6 electrons) to complete its octet after forming one single bond with carbon.
Verify the octet rule for all atoms: carbon has 8 electrons from four single bonds, and each chlorine has 8 electrons (one bond plus three lone pairs), confirming the correct Lewis structure.
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