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Which of the following statements is not correct?

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Primary valency of the central metal of a complex is always satisfied by anions

Secondary valency of the central metal of a complex may be satisfied by either negative ions or neutral molecules

Species attached by primary valencies in a complex compound can be precipitated out

Species attached through secondary valencies in a complex are Lewis acids

answer is D.

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Detailed Solution

The secondary valencies are directed in space towards fixed positions around the neutral atom.

Species attached through secondary valencies in a complex are Lewis bases.

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