Question

cannot exist but IF, exist.
This fact can be explained
on the basis of​

Answer 1

Answer:

Basic Writings

Anselm · 1997 · Philosophy

I, however, say this: if that than which a greater cannot be thought is neither ... By contrast, whatever can be thought to exist but does not in fact exist, can be ...

Answer 2

Correct Question:

IBr7  cannot exist but IF7 exists. This fact can be explained  on the basis of​

Correct Answer:

The existence of IF7  and non-existence of IBr7 can be explained on the basis of electronegativity and the size of atoms.

- Fluorine is the most electronegative element in the periodic table.

- Moreover, its size is also very small.

- Due to this, it can form 7 bonds with iodine very easily and form IF7.

- On the other hand, the electronegativity of Bromine is very less as compared to fluorine.

- Also, the size of Bromine is very large.

- So, it experiences a lot of repulsion in making 7 bonds with iodine and thus cannot form IBr7 with iodine.