A) Primary valencies are ionisable
B) Secondary valencies are ionisable
C) Only primary valencies are non-ionizable
D) Primary and secondary valencies are non- ionisable
Correct Answer: A
Solution :
According to postulates of Werner?s theory for coordination compounds, metal atoms exhibit two types of valencies \[ie,\]primary valency and secondary valency. The primary valency is ionisable whereas the secondary valency is non-ionisable.
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