Table of Contents
What is a structure of NaCl?
NaClSodium chloride / Formula
What crystal structure does NaCl have?
face centered cubic unit cell
NaCl is a face centered cubic unit cell which has four cations and four anions.
Is NaCl a close packed structure?
Many common inorganic crystals have structures that are related to cubic close packed (face-centered cubic) or hexagonal close packed sphere packings. The NaCl structure is a good example of the latter. One octahedral and one tetrahedral site in a face-centered cubic unit cell.
Why does NaCl have cubic structure?
Ions of opposite charge strongly attract each other; those of like charges repel. As a result ions in an ionic compound are arranged in a particular manner.
Is NaCl a FCC?
NaCl is a FCC unit cell which has four cations and four anions. This can be shown by counting the number of ions and multiplying them in relation to their position.
What is the coordination number of NaCl?
In NaCl crystal, each sodium ion is surrounded by 6 chloride ions and each chloride ion is surrounded by 6 sodium ions. So, the coordination number of NaCl as per definition will be 6:6.
How is NaCl FCC?
NaCl is a FCC unit cell which has four cations and four anions. This can be shown by counting the number of ions and multiplying them in relation to their position. In NaCl, each ion is surrounded by six ions of two opposite charges as expected on electrostatic grounds.
What is the coordination number of NaCl crystal structure?
Is NaCl FCC?
Is NaCl simple cubic or FCC?
NaCl has a cubic unit cell. It is best thought of as a face-centered cubic array of anions with an interpenetrating fcc cation lattice (or vice-versa). The cell looks the same whether you start with anions or cations on the corners. Each ion is 6-coordinate and has a local octahedral geometry.
How many NaCl molecules there are in the conventional unit cell?
The conventional unit cell is a cube with sides of a. There are 4 Na atoms (purple) and 4 Cl atoms (green) in the conventional unit cell. One Na atom comes from the 8 corners and 3 from the six faces. One Cl atom is in the center and 3 come from the twelve edges.
What is the difference between NaCl and fcc structure?
Easy answer: NaCl has two different ions (one at origin, the other at the center of unit cell), while the standard FCC is only one. Complete answer: both NaCl and a standard FCC structure belong to the space group Fm-3m. And Fm-3m has two distinguished Wyckoff positions with a multiplicity 8.
What is the structure of NaCl in chemistry?
The Sodium Chloride Structure. General Notes. NaCl has a cubic unit cell. It is best thought of as a face-centered cubic array of anions with an interpenetrating fcc cation lattice (or vice-versa).
What is the difference between face centered cubic and NaCl?
One at (0,0,0) and the other at (1/2,1/2,1/2) The difference between the two is that, in a standard FCC, only one of them are occupied, while in NaCl, both of them are occupied by crystallographically different ions. Face-centered cubic (FCC, 23F) is one of 14 Bravais lattices.
How many types of atoms are in fcc structure?
To begin with, standard FCC structure consists of only one type of atom. Second, The FCC structure contains holes at the middle of each edge of the unit cell, as well as the unit cell’s center.