Re: What is the difference in B/w square planar and tetrahedral coordination of

Garima,

This is a fairly complicated question to answer in a few brief
paragraphs.  Basically, it has to do with the available bonding orbitals in
the ligands (i.e. the things attached to the central metal atoms).  Carbon
has room in it's p-orbitals to overlap with the metal atoms, so it forms
pi-type bonds.  Chlorine uses s- orbitals to form sigma-type bonds to the
central metal.  Ligands with room in their d-orbitals will form still
different kinds of bonds.  I recommend taking a look at a college freshman
chemistry book (e.g. Zumdahl, "General Chemistry").  Also, look at
high-spin vs. low-spin complexes.

Regards,


Marc