Question

Q.Coordination numbers of Cl⁻ ion and Na⁺¹ ion in NaCl crystal are:

a. 5 and 6
b. 6 and 6
c. 6 and 4
d. 3 and 3

Answer 1

option b is correct

It has 4 chlorine and 2 sodium around a

nucleus of NaCl atom .

Therefore the NaCl has " 6 " .

Therefore the coordination number is """ 6 """ .

Answer 2

(b) obtion is right

Explanation:

in Nacl structure each ion sorrounded by another 6 ion so both Cl^- and Na^+ have 6 coordination no.