Is IOF5 polar or nonpolar? – Polarity of IOF5

Home  > Chemistry Questions >  IOF5 polar or nonpolar?

The question is –

Is IOF5 polar or nonpolar?


IOF5 is polar.


Iodine oxide pentafluoride (IOF5) is polar as the unequal dipole moments of polar I=O and I-F bonds do not get canceled equally in the asymmetrical octahedral shape of the molecule.

IOF5 consists of one I=O bond and five I-F bonds.

Each I=O bond is polar as it consists of an electronegativity difference of 0.78 units between the double covalently bonded iodine (E.N = 2.66) and oxygen (E.N = 3.44) atoms.

In contrast, the electronegative difference in each I-F bond is even higher i.e., 1.32 units between the single covalently bonded iodine and fluorine (E.N = 3.98) atoms.

Fluorine being the most electronegative element of the Periodic Table, strongly attracts the shared electron cloud from each I-F bond towards itself.

In IOF5, the central I-atom gains a partial positive (δ+) charge, while the more electronegative O and F-atoms gain strong partial negative (δ) charges.

There is no lone pair of electrons present on the central halogen (iodine) atom; thus, the molecule possesses an octahedral shape and molecular geometry identical to its ideal electron pair geometry.

The sideways directing, I-F dipole moments get canceled equally in this octahedral shape, but the higher downwards-pointing I-F dipole moment does not get canceled with the oppositely directed, smaller I=O dipole moment.

is iof5 polar or nonpolar

The charged electron cloud stays non-uniformly distributed. Thus, IOF5 is overall polar (net µ > 0). 

Also, check –

How to identify polar or nonpolar compounds?

Did you like it?

About the author

Vishal Goyal is the founder of Topblogtenz, a comprehensive resource for students seeking guidance and support in their chemistry studies. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. The team at Topblogtenz includes experts like experienced researchers, professors, and educators, with the goal of making complex subjects like chemistry accessible and understandable for all. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. Let's connect through LinkedIn:

Share it...

Leave a Comment

Your email address will not be published. Required fields are marked *

About Topblogtenz

Topblogtenz is a website dedicated to providing informative and engaging content related to the field of chemistry and science. We aim to make complex subjects, like chemistry, approachable and enjoyable for everyone.

Connect with us

Copyright © 2023 - All rights Reserved

Scroll to Top