Hf2- is linear and
symmetrical, f-h-f- and has one of the strongest systems
of hydrogenbonding
a) draw atomic overlap representations for each of the sigma and
piorbitals of hf2-

b) draw oa mo energy level scheme for the molecule. place h atom 1s
orbital on left, fluorine 2s and 2p orbital (or the
appropriatesalcs) on right, and orbitals of hf2- in center.

c) given evergy level scheme derived in part b, would you
expecthf2- to be diamagnetic or paramagnetic

d) what is the h-f bond order in hf2-?