Question

Why is a high temperature needed to melt potassium iodide?

Answer 1

Potassium Iodide have a lot of strong bonds which requires a very high temperature (high energy) to break them and change into a different state of matter. 

Answer 2

Step-by-step explanation:

Potassium Iodide -

It is a salt , which is made of the ions of potassium and iodine ,

Potassium being the cation , and iodide being the anion .

The ions of this salt are held by strong ionic forces , which hold the ions together very strongly .

Hence , a lot of energy is required to melt the salt , as the bond between the ions is very strong .

Hence , the melting point of this salt , i.e. , Potassium Iodide , is very strong .