Question

In $NaCl$ lattice, the coordination number of $C{l}^{-}$ ion is

• A. $2$
• B. $6$
• C. $4$
• D. $8$

Answer 1

Answer: (B)

Each $N{a}^{+}$ is surrounded by six $C{l}^{-}$ ions in $NaCl$ crystal lattice because its co-ordination number is $6:6$.