What is the structural arrangement of NaCl crystal?
(iv) The structural arrangement of the sodium chloride crystal is cubic close packing with Cl− ions at corners and face centres and Na+ ions at edge centres and body centre, With respect to Na+ ion it is octahedral.
Why is NaCl a crystal structure?
Sodium Chloride is an alkali halide with an fcc crystal structure. The basis is two ions, a sodium cation and a chlorine anion. The crystal lattice parameter is 0.563 nm. The diagram shows both a unit cell with ion locations indicated (a) and a space filling model (b) of ionic hard spheres.
What type of crystal is NaCl?
ionic crystal
Solution : NaCl is ionic crystal so it is formed by `Na^(+)` and `Cl^(-)` ions.
What is the structure of sodium crystal?
In the solid state Sodium has a body-centered cubic crystal structure with a = 0.428 nm and a nearest neighbor distance of 0.371 nm.
What are the basis positions for NaCl?
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.
What is the structure of NaCl fcc or BCC?
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.
How does NaCl have octahedral structure?
Octahedral hole NaCl. NaCl crystal structure can be thought of in the following way: The chlorine anions (green) form a face centered cubic close-packing structure. The sodium cations (blue) fit into the octahedral spaces formed by the chlorine.
Is NaCl fcc or BCC?
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).
Is NaCl tetrahedral?
The NaCl structure is a good example of the latter. One octahedral and one tetrahedral site in a face-centered cubic unit cell. Each cell contains four packing atoms (gray), four octahedral sites (pink), and eight tetrahedral sites (blue).
What type of bond is NaCl?
Ionic bonds
Ionic bonds usually occur between metal and nonmetal ions. For example, sodium (Na), a metal, and chloride (Cl), a nonmetal, form an ionic bond to make NaCl.
How do you know NaCl is a fcc?