The linear molecule has been observed in the gas phase. (See H. Korsgen, W. Urban, and...

The linear molecule has been observed in the gas phase. (See H. Korsgen, W. Urban, and J. M. Brown, I. Chem. Pliys. 1999, 110, 3861.) Assume that the iron atom can potentially use s, p, and d orbitals to inter-act with the hydrogens. If the z axis is collinear with the molecular axis:

a. Sketch the group orbitals of the hydrogen atoms that potentially could interact with the iron.

b. Show how the group orbitals and the central atom would interact.

c. Which interaction would you expect to be the strongest? The weakest? Explain briefly.