Question

1 point
Which of the following substances does not crystallize in the rock salt structure
(A) Hua
C) MO
в ко
(D) Сс
A А
роо
B
c​

Answer 1

Answer:

NaCl, MgO and KCl crystallize in Rock Salt structure while CsCl have different structure

Ionic Solids -

Ionic bond between cation and anion. Generally hard and brittle.

- wherein

Ex. NaCl, CsCl, ZnS, CaCl2, N2O5(s), PBr5(S)

Answer 2

Answer:

The alkali halides crystallize in the NaCl structure also known as rock-salt structure (rock salt is the mineral form of sodium chloride); exceptions being CsCl, CsBr, and CsI, which crystallize in the CsCl structure. In the NaCl structure (face-centered cubic lattice), each cation is surrounding by six anions, and vice versa (coordination number of 6). In the CsCl structure, each cation is surrounded by eight anions and vice versa (coordination number of 8).