valence electrons for d bock elements

[Mcat35]

---

Members don't see this ad.

ya, I was wondering what would be the valence electrons for d block elements.. its it just the outer S shell or D shells also count.. I've seen some mixed reviews on this.

 

[collegestud2013]

Both the s orbital and the d orbitals of the next lowest principle energy level (eg. 4s and 3d) would be part the valence shell in transition metals since the two are very similar in energy, and you'll see the ground state electron configuration of TMs as e-s in both the s and d. However, when ground state TMs lose electrons, for example, when oxidized or when forming TM coordination complexes, they'll generally lose electrons from the s orbital first, leaving electrons only in the d orbitals.

 

[Mcat35]

Both the s orbital and the d orbitals of the next lowest principle energy level (eg. 4s and 3d) would be part the valence shell in transition metals since the two are very similar in energy, and you'll see the ground state electron configuration of TMs as e-s in both the s and d. However, when ground state TMs lose electrons, for example, when oxidized or when forming TM coordination complexes, they'll generally lose electrons from the s orbital first, leaving electrons only in the d orbitals.

ya ok,

I realize transition metals can have like +7 oxidation states because of their D electrons, just wasn't sure if those would count as valence..

Now I know 🙂

Thanks