How would you name the compound IF7 and is it ionic or molecular?

Iodine heptafluoride is the name of IF7.  The bonds in IF7 are not ionic.  An I-F bond has an electronegativity difference of 1.32, which results in a bond with 35% ionic character.  As you can see, the I-F bond has more covalent character than ionic character.

A.S. seems on the verge of telling you that nonmetal-nonmetal bonds are covalent and metal-nonmetal bonds are ionic.  That is not the case.  Only the metals with low electronegativities coupled with the most highly electronegative nonmetals have high ionic character.  There are many metal-nonmetal bonds which have greater covalent character than ionic character.