[tclam662]

Dear all,

Got a question in my head while preparing a presentation about chelation but I cant figure it out, as both Sodium triphosphate, Tetrasodium pyrophosphate and Trisodium citrate can form complex with Calcium ion, each of them have different number of ligands and denticity so how can Ca2+ be chelated? and what will be the resulting complex called? any replies will be appreciated.

Thanks in advance!

[Vidya]

Chelation is basically formation of rings by ligands around the metal ions .Ca2+ has empty 4s and 3d orbitals .It can accept electrons from ligands and can form different sizes of the chelating ring around it.