객관식
Which product is made up of fatty acids that are derived from ?
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- 1. A Review of General Chemistry5h 6m
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2. Molecular Representations
Functional Groups
객관식
Which two elements both have valence electrons and are commonly capable of forming long covalent chains in organic molecules?
A
Oxygen and nitrogen
B
Carbon and silicon
C
Hydrogen and fluorine
D
Sulfur and phosphorus
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검증된 단계별 안내1
Identify the group in the periodic table that contains elements with 4 valence electrons. Elements in Group 14 (also called Group IV) have 4 valence electrons.
Recall that carbon (C) is a Group 14 element with 4 valence electrons and is well-known for forming long covalent chains, which is the basis of organic chemistry.
Recognize that silicon (Si), also in Group 14, has 4 valence electrons and can form long covalent chains similar to carbon, although less commonly in organic molecules.
Understand why other options are incorrect: oxygen and nitrogen have 6 and 5 valence electrons respectively; hydrogen and fluorine have 1 and 7 valence electrons; sulfur and phosphorus have 6 and 5 valence electrons.
Conclude that the two elements with 4 valence electrons capable of forming long covalent chains in organic molecules are carbon and silicon.
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