Coordination number of Cs + and Cl - in CsCl crystal are:

Question

Coordination number of Cs + and Cl - in CsCl crystal are: (A) 8, 8 (B) 4, 4 (C) 6, 6 (D) 8, 4

Tardigrade Admin · Accepted Answer

Each Cs ion is surrounded by 8 Cl - ions and each Cl - ion is surrounded by 8 Cs + ions. CsCl has a bcc type structure in which Cs + occupy the centre of cube. Thus, the structure has 8: 8 coordination number.

Q. Coordination number of $C s^{+}$ and $C l^{-}$ in $C s Cl$ crystal are:

8, 8

4, 4

6, 6

8, 4

Each Cs ion is surrounded by $8 C l^{-}$ ions and each $C l^{-}$ ion is surrounded by $8 C s^{+}$ ions. $C s Cl$ has a bcc type structure in which $C s^{+}$ occupy the centre of cube. Thus, the structure has $8 : 8$ coordination number.

Q. Coordination number of Cs+ and Cl− in CsCl crystal are: