객관식
Which of the following best describes the Lewis structure of (dimethyl ether, )?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best represents the correct Lewis structure for (ethylamine, written as CHCHNH)?
A
A structure with two carbon atoms single-bonded to each other, the first carbon bonded to three hydrogens, the second carbon bonded to two hydrogens and a nitrogen, and the nitrogen bonded to two hydrogens, with all atoms having complete octets where possible.
B
A structure with two carbon atoms double-bonded to each other, each carbon bonded to two hydrogens, and the second carbon bonded to a nitrogen with a double bond, and the nitrogen bonded to one hydrogen.
C
A structure with two carbon atoms single-bonded to each other, the first carbon bonded to two hydrogens and a nitrogen, the nitrogen bonded to three hydrogens, and the second carbon bonded to three hydrogens.
D
A structure with a carbon triple-bonded to a nitrogen, the carbon bonded to three hydrogens, and the nitrogen bonded to two hydrogens.
검증된 단계별 안내1
Identify the molecular formula and the connectivity of atoms in ethylamine (C\_2H\_5N), which is written as CH\_3CH\_2NH\_2. This means there are two carbon atoms connected in a chain, with an amino group (NH\_2) attached to the second carbon.
Start by drawing the two carbon atoms connected by a single bond. The first carbon (CH\_3) should have three hydrogen atoms bonded to it, and the second carbon (CH\_2) should have two hydrogen atoms bonded to it.
Attach the nitrogen atom to the second carbon with a single bond. Since nitrogen typically forms three bonds and has one lone pair, bond it to two hydrogen atoms to complete its valence shell.
Check that all atoms have complete octets where applicable: each carbon should have four bonds total, nitrogen should have three bonds plus a lone pair, and hydrogen atoms have one bond each.
Verify that there are no double or triple bonds in the structure, as ethylamine is an amine with only single bonds between atoms, consistent with the molecular formula and typical bonding patterns.
