What is the hybridization of the central iodine atom in I3−?

Express your answer in the orbital notations s, p, d, and f.

Express your answer in the orbital notations s, p, d, and f.

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Dec 9, 2016




The easiest way to determine this is to draw the lewis structure of the species. What's important here is knowing that the species, #I# can become hypervalent, or that is, it will disobey the octet rule by expanding its valency to accept more than eight electron around it.

Another good example of a species which does this is #XeF_4#.

Consider below:
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Remember when forming hybrid orbitals, we always know that we must:

use #n# atomic orbital to make #n# hybrid orbitals


for #n=5# we know that we make #sp^3d# hybrids.

enter image source here

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