Problem: Use the molecular orbital theory to determine the ground state electron configuration of F2 and F2+.Then use the molecular orbital theory to determine the bond order and magnetism of the molecules.

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We’re being asked to determine the ground state electron configuration of F2 and F2+ then determine the bond order and magnetism of the molecules


Recall that for:

• diamagnetic: all of the electrons are paired

• paramagnetic: at least one electron is unpaired


We can calculate the bond order using:


Bond Order=12[# of e- in bonding MO-#of e- in antibonding MO]

The bonding MOs are those without an asterisk (e.g., σ1s), while the antibonding MOs are those with an asterisk (e.g., σ1s*)


To do so, we need to look at the molecular orbital (MO) diagram of each molecule. 

Recall that we have two types of MO diagrams:


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Problem Details

Use the molecular orbital theory to determine the ground state electron configuration of F2 and F2+.

Then use the molecular orbital theory to determine the bond order and magnetism of the molecules.

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Our tutors have indicated that to solve this problem you will need to apply the MO Theory: Homonuclear Diatomic Molecules concept. You can view video lessons to learn MO Theory: Homonuclear Diatomic Molecules. Or if you need more MO Theory: Homonuclear Diatomic Molecules practice, you can also practice MO Theory: Homonuclear Diatomic Molecules practice problems.