I3 Lewis Structure
Although I3 is known, f3 is unknown. Explain why F3 cannot be formed using the Lewis framework.
Yes
If you draw the Lewis dot structure (a linear trihydride ion) of I3, you will see that the central atom I forms two bonds and has three pairs of non-bonded electrons There are a total of five pairs of electrons in one byte. Many contacts break the byte rule in this way, but long line elements such as F cannot. This is because lower elements like iodine can use the available backbone to obtain the extra electron pair (sp3d hybridization), but there is no backbone to use F.