Question

explain the shape of ICI2 by VSEPR theory

Answer 1

Answer:

The ICl2−has sp3d-hybridized structure having trigonal bipyramidal shape but due to the presence of lone pair of electron on iodine atom the structure is distorted.

The three lone pairs are in the equatorial positions, leaving the Cl and I in a linear molecular shape.

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Answer 2

Shape of ICl⁻₂ by VSEPR theory

Explanation:

• According to VSEPR theory, shape of a molecule can be determined. For finding a shape, firstly calculate the total number of electron pairs in the central atom.

      Total no. of e⁻ pairs on central atom = $\frac{1}{2}$( total no. of valence e⁻ in a

                      central atom + total no. of atoms linked with a central atom by

                      single bond)

• Then calculate total no. of bond pairs = number of atoms linked with      

                                                                          a central atom by single bond.

• Then calculate total no. of lone pairs = (total no. of e⁻ pairs on central atom - total no. of bond pairs)
• In given molecule ICl₂⁻, Total no. of e⁻ pairs on central atom = $\frac{1}{2}$(7 + 2 + 1 )= 5
• Total no. of bond pairs = 2
• Total no. of lone pairs = 5-2 = 3

Therefore, the shape is linear and geometry is trigonal bipyramidal.