Q.

Give the co-ordination number of La in the complex [La(EDTA)(H2O)4].3H2O.

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answer is 10.

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Detailed Solution

In the given complex, there is one EDTA and four water water molecules.

EDTA is a hexadentate ligand and coordination number of La (central metal ion):

Co-ordination number of La is 6+4 = 10.

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