Multiple Choice
In the Lewis dot structure of the neutral compound N2O, which atom is the central atom, and what is its formal charge?
120
views
11. Bonding & Molecular Structure
Lewis Dot Structures: Neutral Compounds
Multiple Choice
Which of the following represents a correct Lewis structure for CH2FCO2H (fluoroacetic acid)?
A
The carboxylic acid group is attached directly to a hydrogen atom, and the central carbon is bonded only to fluorine and two hydrogens.
B
The central carbon is bonded to three hydrogens and one fluorine, with the carboxylic acid group attached to the fluorine atom.
C
The central carbon is double-bonded to fluorine and single-bonded to two hydrogens and one carboxylic acid group.
D
The central carbon is bonded to two hydrogens, one fluorine, and one carboxylic acid group (CO2H), with all atoms having complete octets and no formal charges.
Verified step by step guidance1
Identify the molecular formula and the connectivity of atoms in fluoroacetic acid (CH2FCO2H). The molecule consists of a central carbon atom bonded to two hydrogens, one fluorine, and one carboxylic acid group (CO2H).
Recall that the carboxylic acid group (CO2H) consists of a carbon atom double-bonded to one oxygen atom, single-bonded to a hydroxyl group (OH), and single-bonded to the central carbon atom.
Draw the central carbon atom with single bonds to two hydrogen atoms and one fluorine atom, and a single bond to the carboxylic acid carbon atom.
Complete the Lewis structure by adding the double bond between the carboxylic acid carbon and one oxygen atom, and a single bond between the carboxylic acid carbon and the hydroxyl oxygen atom, which is also bonded to a hydrogen atom.
Check that all atoms (except hydrogen) have complete octets and that the formal charges are minimized, confirming the correct Lewis structure for fluoroacetic acid.
Related Videos
Related Practice
