According to Werner’s theory, the primary valencies of the central metal atom :
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- are satisfied by neutral molecules or negative ions.
- are equal to its coordination number.
- are satisfied by negative ions.
- are non-ionisable.
The Correct Option is C
Solution and Explanation
• Primary valency
• Secondary valency
Step 1: Primary valency. Primary valency corresponds to oxidation state. These are ionisable. These are satisfied by negative ions.
Step 2: Secondary valency. Secondary valency corresponds to coordination number. These are non-ionisable. These are satisfied by ligands.
Step 3: Evaluate options. (A) Describes secondary valency. (B) Incorrect. (C) Correct. (D) Incorrect because primary valencies are ionisable. \[ \boxed{(C)} \]
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