The correct shape and I-I-I bond angles respectively in  ion are:

Explanation:-

Shape and Bond Angle of Ion

• The ion consists of three iodine atoms and one extra electron, giving it a linear structure as determined by VSEPR theory.
• The central iodine atom has three lone pairs of electrons and two bond pairs of electrons (from the two Iodine atoms bonded to it).
• To minimize repulsions, the molecule adopts a linear shape.
• The bond angles between the three iodine atoms () are therefore 180º.

 has sp3d hybridization (2 BP + 3 LP) and linear geometry.

The correct option is Linear; 180º