What atomic or hybrid orbitals make up the sigma bond between I and Cl in iodine pentachloride, ICl5?

1 Answer
Dec 6, 2016

The ICl5 species contain sp3d2 hybridization.

Explanation:

Consider the lewis structure of ICl5 and the presence of the bonded species to lone pair ratio of the central atom I.

Notice that the electronic geometry of the species is octahedral due to the 6 electron cloud which are present around the central atom.

Because the ratio of bonded species to lone pair is 5:1, the molecular geometry will be square pyramidal , and it's also good to note that you can expect bond angles of 90 and 180 degrees.

Also note that when forming hybrid orbitals, you use n atomic orbitals to make n hybrid orbitals,

where n is the total amount of orbital

The ICl5 species will contain sp3d2 hybridization.