Electron Counting in M-M Bonded System

What the electron counting for the follow:

• Total =14e-

• Total =16e-

• Total =17e-

• Total =18e-

What the electron counting for (Fe) complex:

• Total =16e-

• Total =18e-

• Total =19e-

• Total =20e-

What the electron counting for the follow:

• Total =14e-

• Total =16e-

• Total =18e-

• Total =20e-

What is the oxidation number of a metal?

• +1

• +2

• -2

• -1

What is the Bond Order of the Re-Re bond?

• 1

• 2

• 3

• 4

What is the type of M-M bond at Ni-Ni complex?

• Dative Ni->Ni

• Covalent Ni-Ni

• Weak M-M by symmetry

• Dative Ni<-Ni

What the electron counting for the follow:

• Total of (Pt) complex=18e-

  Total of (W) complex=18e-

• Total of (Pt) complex=16e-

  Total of (W) complex=18e-

• Total of (Pt) complex=18e-

  Total of (W) complex=16e-

• Total of (Pt) complex=16e-

  Total of (W) complex=16e-