객관식
Which of the following best describes the Lewis structure of cyanazine ()?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best represents the correct Lewis structure for (chloroethane)?
A
Two carbon atoms are single-bonded to each other; one carbon is bonded to three hydrogens, the other carbon is bonded to two hydrogens and one chlorine atom; all atoms have complete octets.
B
Both carbon atoms are bonded to three hydrogens each, and the chlorine atom is not bonded to any carbon.
C
One carbon atom is triple-bonded to the other carbon; each carbon is bonded to one hydrogen and one chlorine atom.
D
Two carbon atoms are double-bonded to each other; each carbon is bonded to two hydrogens and one chlorine atom.
검증된 단계별 안내1
Identify the molecular formula and structure of chloroethane, which is C\_2H\_5Cl, indicating two carbon atoms, five hydrogens, and one chlorine atom.
Recall that in chloroethane, the two carbon atoms are connected by a single bond, as it is an alkane derivative, not an alkene or alkyne.
Determine the bonding around each carbon: one carbon is bonded to three hydrogens (making it a methyl group, CH\_3), and the other carbon is bonded to two hydrogens and one chlorine atom (making it a CH\_2Cl group).
Ensure that each carbon atom forms four bonds total (satisfying the tetravalency of carbon), and that chlorine forms one bond and has three lone pairs to complete its octet.
Verify that all atoms have complete octets: carbons have four bonds each, chlorine has one bond plus three lone pairs, and hydrogens have one bond each.
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