a. Primary valencies are satisfied by negative ions while secondary valences are satisfied by negative ion only. 
b. A metal ion has a definite number of secondary valences around the central atom. 
c. Primary valences are usually ionizable, while secondary valences are non-ionizable


The correct statements among the above are:

1. a, b

2. a, c

3. b, c

4. a, b, c 

Subtopic:  Werner’s Theory |
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