Question #c1291

1 Answer
Feb 28, 2017

Here is what I get for ICl-4 and KrF2.

Explanation:

ICl-4

The Lewis structure of ICl-4 is

chem.libretexts.org

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

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

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

chem.libretexts.org

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

KrF2

The Lewis structure of KrF2 is:

nonsibihighschool.org

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.

upload.wikimedia.org

The lone pairs will arrange themselves at the equatorial positions.

KrF2
(Adapted from bilbo.chm.uri.edu)

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