Hello all, This is not a homework problem. Just to understand the two doubly degenerate mode of D4h symmetry i wanted to make sample calculation. Pt in the middle of a square formed by 4 Cl atoms. PtCl4 has square planar structure (AB4) molecule. 1. What is the whole charge of PtCl4 ? Is this [tex]-2[/tex] ? 2. Multiplicity of Pt ? Multiplicity = [2S+1] where S is spin state of Pt. thanks.