Which of the following ligand is bidentate? 

  • Option 1)


  • Option 2)

    CH_{3}C\epsilon N

  • Option 3)


  • Option 4)



Answers (1)
V Vakul


Types of Ligands on the basis of Connectivity -

(i) Unidentate - ligand is bound to metal ion through a single donor atom.

eg: Cl^{-}, H_{2}O and NH_{3}

(ii) Bidentate : when ligand can bind through two donor atoms

eg: CH_{2}NH_{2}-CH_{2}NH_{2}

(iii) Polydentate - when ligand bind to two or more donor atoms

(iv) Hexadentate - type of polydentate having six donor atoms

(v) Ambidentate- which can ligate through two different atoms at a time

eg. M\leftarrow SCN & M\leftarrow NCS

- wherein

All ambidentate ligands are monodentate but all monodentate ligands are not ambidentate



 When Ligands can bind through 2 donor atoms they are called bidentate ligands. Of those given only C2O-fits that criteria. 

Option 1)


This option is correct

Option 2)

CH_{3}C\epsilon N

This option is incorrect

Option 3)


This option is incorrect

Option 4)


This option is incorrect

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