[Bias Binte Kamal]

What's the hybridization and shape of CoCl5 3- ion? I thought it's sp3d3 but the book says it's tetrahedral. Could someone help?

[Bias Binte Kamal]

Anyone?

[Borek]

sp³d³ is very crowded (which means high energy) and rather rare, whenever possible molecules will prefer more loose arrangements of atoms (typically much lower energy, as distances between atoms are higher and the energy is lower).

That's without even trying to analyze orbitals involved, there is probably more to that.

[Bias Binte Kamal]

Have been looking for it everywhere just can't find anywhere. Anyways, thanks.