# Question #c1291

Feb 28, 2017

Here is what I get for $\text{ICl"_4^"-}$ and ${\text{KrF}}_{2}$.

#### Explanation:

$\boldsymbol{\text{ICl"_4^"-}}$

The Lewis structure of $\text{ICl"_4^"-}$ is

The central atom has 2 lone pairs and 4 bond pairs.

Thus, the steric number (SN) is 6, and the electron geometry is octahedral.

The lone pairs will arrange themselves at 180° to each other.

The molecular shape ignores the lone pairs, so the VSEPR shape is square planar.

${\boldsymbol{\text{KrF}}}_{2}$

The Lewis structure of ${\text{KrF}}_{2}$ is:

The central atom has 3 lone pairs and 2 bond pairs.

Thus, the steric number (SN) is 5, and the electron geometry is trigonal bipyramidal.

The lone pairs will arrange themselves at the equatorial positions.