The Radius Of Nat Is 95 pm and CF Is 181 pm. Find Coordination, Number of Na+ Ions

The radius of Nat is 95 pm and CF is 181 pm. Find coordination, number of Na+ ions.

Ans. Radius ratio=r( Na+)/r(cl-)= 95/181 =0.524. Since

radius ratio lies between 0.414- 0.732, so the coordination number of Na+ ions is 6.