The iodine bromide molecule, IBr, is an interhalogen compound.Assume that the molecular orbitals of IBr are analogous tothe homonuclear diatomic molecule F2. (a) Which valenceatomic orbitals of I and of Br are used to construct the MOs ofIBr? (b) What is the bond order of the IBr molecule? (c) One ofthe valence MOs of IBr is sketched here. Why are the atomicorbital contributions to this MO different in size? (d) What isthe label for the MO sketched below? (e) For the IBr molecule,how many electrons occupy the MO sketched below?

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The iodine bromide molecule, IBr, is an interhalogen compound.
Assume that the molecular orbitals of IBr are analogous to
the homonuclear diatomic molecule F2. (a) Which valence
atomic orbitals of I and of Br are used to construct the MOs of
IBr? (b) What is the bond order of the IBr molecule? (c) One of
the valence MOs of IBr is sketched here. Why are the atomic
orbital contributions to this MO different in size? (d) What is
the label for the MO sketched below? (e) For the IBr molecule,
how many electrons occupy the MO sketched below?

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