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Posted: Thu Nov 30, 2017 3:53 am
by Nha Dang 2I
4.9 (a) What is the shape of an ICl3 molecule (iodine is the central atom)? (b) What value is expected for the ClICl bond angle?

When we finish filling up the octet, we can just put the extra electrons on the central atom? How does this work?

Re: 4.9

Posted: Thu Nov 30, 2017 10:39 am
by Clara Hu 1G
Iodine has d-orbitals so it has an expanded octet and can accommodate more than 8 valence electrons. ICl3 is T-shaped because it has 5 areas of electron density with 2 lone pairs, and the Cl-I-Cl bond angle is less than 90 degrees because of the repulsion from the lone pairs.