QQuestionChemistry
QuestionChemistry
What are the bond order, HOMO, LUMO, and magnetic properties of the molecular ion F−2?
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Answer
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Step 1
The molecular geometry of F$_2^-$ is linear.
Since there is a negative charge on the molecule, we add one more electron to the total count. :::{.center} :::{.math} \chemfig{F-F} ::: :::
Step 2
Calculate the bond order for the F-F bond. In the Lewis structure, there are two electron pairs shared between the two fluorine atoms. Therefore, the bond order for the F-F bond is: :::{.math} BO(F-F) = frac{Number\ of\ bonding\ electrons - Number\ of\ antibonding\ electrons}{2} = frac{2 - 0}{2} = 1 ::: The bond order for the F-F bond is 1, indicating a single bond.
Final Answer
- Bond order of F-F bond: 1 - HOMO: Bonding molecular orbital - LUMO: Antibonding molecular orbital - Magnetic properties: Paramagnetic
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