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What is the number of donor atom(s) in dimethylglyoximato ligand?

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Important Questions on Coordination Compounds

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Which molecule/ion among the following cannot act as a ligand in complex compounds?
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Which of the following ligands can act as an ambidentate ligand?
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The total number of coordination sites in ethylenediaminetetraacetate ( EDTA4) is ...................

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1 mol of an octahedral metal complex with formula MCl3·2 L on reaction with excess of AgNO3 gives 1 mol of AgCl. The denticity of Ligand L is___________ (Integer answer)
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What is the number of donor atoms in dimethylglyoximato ligand?
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What is the number of nitrogen atoms and -COO- groups respectively present in EDTA?
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Among the following which are ambidentate ligands

(1) NO2-

(2)C2O42-

(3) EDTA4-

(4) SCN-

MEDIUM
The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl3.4NH3 is _______ . (Round off to the Nearest Integer).
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The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are: