Question

Which one of the following is highest melting halide?

• A. $AgCl$
• B. $AgBr$
• C. $AgF$
• D. $AgI$

Answer 1

The correct option is D $AgI$

As the size of anion increases, the tendency of anion to polarise the cation increase and due to this the covalent character increases.

As we know that covalent compounds are insoluble in water and have higher melting point.

The iodine is larger is size among all halides hence it will polarise the cation more as compare to other halides.

Therefore, AgI has highest melting point.

The correct option is D.