Question

Difference between primary and daughters secondary valency

Answer 1

1. The primary valencies indicate the oxidation state of the central metal atom while the secondary valency indicate about the co-ordination number of the metal atom.
2. Primary valencies are ionizable whereas secondary valencies non-ionizable.
3. Primary valencies are satisfied by Negative ions while secondary ions are satisfed by neutral or -ve groups.
4. In complexes, the ligands are projected in space about the central metal atom to give a specific shape to the complex.