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
Reasoning: The statement about primary valencies being satisfied by negative ions matches option (C); the other options describe the secondary valency or are wrong.
Answer: (C) are satisfied by negative ions
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