Respuesta :
Answer:
The model of the crystal sodium chloride (NaCl) is structured in a face-centered cubic (FCC) lattice because this arrangement allows for the most efficient packing of the ions, maximizing ionic attraction and minimizing repulsion, which is a result of the ionic bonding between Na+ and Cl- ions.
Explanation:
It seems there might be a slight misunderstanding or typo in your question. I believe you are referring to the crystal model of sodium chloride, which is commonly known as table salt. Let's clarify the question and then proceed with the explanation.
Question:
Why is the model of the crystal sodium chloride (NaCl) structured the way it is?
Answer:
Sodium chloride, or NaCl, crystallizes in a cubic structure known as the face-centered cubic (FCC) lattice. Each sodium ion (Na+) is surrounded by six chloride ions (Cl-), and each chloride ion is similarly surrounded by six sodium ions. This arrangement is due to the ionic bonding between the positively charged sodium ions and the negatively charged chloride ions.
1. Sodium (Na) has one electron in its outer shell, while chlorine (Cl) has seven electrons in its outer shell. Sodium tends to lose its one electron to achieve a stable electron configuration, and chlorine tends to gain an electron to fill its outer shell.
2. When sodium loses an electron, it becomes a positively charged ion (Na+), and when chlorine gains an electron, it becomes a negatively charged ion (Cl-).
3. These oppositely charged ions are strongly attracted to each other, forming ionic bonds.
4. The ions arrange themselves in a repeating pattern to maximize the attraction between opposite charges and minimize the repulsion between like charges. This results in a three-dimensional lattice where each ion is surrounded by ions of opposite charge.
5. The most efficient way to pack these ions together is in a cubic structure, where each ion is equidistant from its neighbors, leading to the characteristic FCC lattice of sodium chloride.
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