Question

What is the name of the ionic compound ${\mathrm{Na}}_3{\mathrm{AlF}}_6$?

Answer 1

${\mathrm{Na}}_3{\mathrm{AlF}}_6$:

• ${\mathrm{Na}}_3{\mathrm{AlF}}_6$ is made up of Sodium$\left({\mathrm{Na}}^{+}\right)$ and hexafluoroaluminate $\left({{\mathrm{AlF}}_6}^{3-}\right)$ ion.
• Sodium has $1+$ charge while hexafluoroaluminate ion has $3-$ charge.
• The name of the ionic compound ${\mathrm{Na}}_3{\mathrm{AlF}}_6$ is Sodium hexafluoroaluminate.
• It is commonly called Cryolite.

The structure of Sodium hexafluoroaluminate is given below: