Question

Icl7 does not exist while if7 exist?

Answer 1

Great question ,

IF7 exist while ICl7 does't , Right.

Reason/ Explanation :-

We know that in the periodic table Fluorine [ F = 3.98 ] is the most electronegative element. so it signifies that Florine only need 1 electron to fill it outermost shell and complete their stability.

So Florine can forms the bond by the Noble gases configuration of Iodine .

But on the other hand Chlorine is not enough electronegative to achieve it's that much of stability and form stable bond with the noble gas iodine.

{For IF7 structure , Refers to the Attachment }

Hope it Helps :-)