Question

Identify the incorrect pair from the following:

• A. Fluorspar - $\text{BF}_3$
• B. Cryolite - $\text{Na}_3\text{AlF}_6$
• C. Fluoroapatite - $3\text{Ca}_3(\text{PO}_4)_2 \cdot \text{CaF}_2$
• D. Carnallite - $\text{KCl} \cdot \text{MgCl}_2 \cdot 6\text{H}_2\text{O}$

Answer 1

Answer: (A)

Fluorspar - $\text{BF}_3$

Answer 2

Fluorspar is actually CaF 2, not BF3. BF3 does not represent Fluorspar, which makes option (1) incorrect.

So, the correct answer is : Option (1)