객관식
Which of the following best describes the correct Lewis structure for (1,1-difluoroethene)?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best describes the Lewis structure of (sodium hydroxide)?
A
The sodium atom is double-bonded to the oxygen atom, and the hydrogen atom is bonded to oxygen with no formal charges.
B
The sodium atom donates its valence electron to the hydroxide ion, resulting in as a cation and as an anion, with the oxygen atom in having three lone pairs and a single bond to hydrogen.
C
The sodium atom shares electrons equally with both the oxygen and hydrogen atoms, forming a linear molecule with no charges.
D
The sodium atom forms a covalent bond with the oxygen atom, and the hydrogen atom is bonded to sodium.
검증된 단계별 안내1
Identify the nature of sodium hydroxide (NaOH) as an ionic compound composed of a sodium cation (Na⁺) and a hydroxide anion (OH⁻).
Recognize that sodium (Na) is a metal that tends to lose its one valence electron to achieve a stable electron configuration, forming Na⁺.
Understand that the hydroxide ion (OH⁻) consists of an oxygen atom bonded to a hydrogen atom, with oxygen carrying three lone pairs of electrons and an overall negative charge.
Draw the Lewis structure by showing Na⁺ as a separate cation and OH⁻ as an anion, where oxygen is single bonded to hydrogen and has three lone pairs, reflecting the negative charge on the hydroxide ion.
Confirm that there is no covalent bonding between sodium and oxygen or hydrogen in NaOH; instead, the compound is held together by ionic attraction between Na⁺ and OH⁻.
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