객관식
Which of the following is the correct Lewis structure for (nitrosyl bromide)?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best describes the correct Lewis structure for (1,1-difluoroethene)?
A
Each carbon atom is double bonded to an oxygen atom, with the hydrogens and fluorines attached to the oxygens.
B
The two carbon atoms are single bonded, each carbon is bonded to two fluorine atoms, and the hydrogens are attached to the fluorines.
C
The two carbon atoms are triple bonded, each carbon is bonded to one hydrogen and one fluorine atom.
D
Each carbon atom is double bonded to the other carbon, each carbon is bonded to one hydrogen and one fluorine atom, and all atoms have complete octets.
검증된 단계별 안내1
Identify the molecular formula and the name: 1,1-difluoroethene corresponds to C\_2F\_2H\_2, where the 'ethene' part indicates a carbon-carbon double bond.
Recall that in alkenes like ethene, the two carbon atoms are connected by a double bond (one sigma and one pi bond), which is a key structural feature.
Since the name is 1,1-difluoroethene, both fluorine atoms are attached to the same carbon (carbon 1), and the hydrogens are attached to the carbons to satisfy valency.
Draw the Lewis structure with a double bond between the two carbons, attach two fluorines to carbon 1, and one hydrogen to each carbon to complete the four bonds per carbon atom.
Verify that all atoms have complete octets: carbons have 8 electrons around them (counting bonds), fluorines and hydrogens have their typical valence satisfied (fluorine with 3 lone pairs and one bond, hydrogen with one bond).
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