Question

I3- ion is known to exist but not F3- ion. Explain the reason after assigning Lewis
structures for both the ions.​

Answer 1

When we see the lewis dot structure of both the elements below, we can see F2- has octet structure, I3- has more electrons than octet. Some elements can afford more electrons than octet structure. This is because Iodine has d orbital in its electronic configuration, where as Florine doesnot.

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