Question

How to assign primary and secondary valancies to metals?

Answer 1

How to assign primary and secondary valancies to metals?

Answer 2

Explanation:

Answer:

Primary valence and secondary valence

primary valencies are variable while secondary valencies are stable. The primary valences are ionisable, and are satisfied by negative ions. The secondary valences are non-ionisable, and are satisfied by negative ions or neutral molecules. The secondary valence is equal to the coordination number of a metal, and remains fixed for a metal.