[" The radius ratio of "KF" is "0.98." The structure "],[" of "KF" is of the type "]

On addition of KF in the solution of HF :-

On addition of KF in the solution of HF :-

Which of the following having having their radius ratio between 0.414 and 0.732 , i.e., for NaCl structure, have their radius ratio not in this range but posses NaCl -type structure?

Which of the following having having their radius ratio between 0.414 and 0.732 , i.e., for NaCl structure, have their radius ratio not in this range but posses NaCl -type structure?

Which of the following having having their radius ratio between 0.414 and 0.732 , i.e., for NaCl structure, have their radius ratio not in this range but posses NaCl -type structure?

Which of the following having their radius ratio between 0.414 to 0.732 i.e for NaCl structure have their radius ratio not in this range but possess NaCl type structure

KF is an example of

What types of ions are present in anhydrous mixture of KF and Hf ?