Do odd electrons make a weak or strong repulsion axis?

Weak or strong compared to what? An odd electron has less repulsive force than a paired set of electrons. You can read more about it here.

http://www.chemteam.info/VSEPR/Odd-Electron-Molecules.html

Thanks for the info!

To determine whether odd electrons create a weak or strong repulsion axis, we need to consider the concept of Hund's rule and the principles of electron-pair repulsion theory.

Hund's rule states that when electrons occupy atomic or molecular orbitals, they tend to maximize their total spin by occupying separate orbitals with the same energy before pairing up. Essentially, electrons prefer to be unpaired whenever possible. This rule helps to explain the arrangements of electrons in atomic and molecular orbitals.

In electron-pair repulsion theory, we assume that electron pairs in the valence shell of an atom or a molecule act as negatively charged clouds. These clouds repel each other, causing the electron pairs to spread out as much as possible to minimize repulsion. This leads to the formation of molecular geometries.

Considering these principles, when an atom has odd electrons, it means that at least one electron is unpaired. Since unpaired electrons contribute to stronger repulsion compared to paired electrons, the repulsion axis created by odd electrons is generally stronger.

In summary, odd electrons create a strong repulsion axis due to the presence of unpaired electrons that result in increased electron-electron repulsion.