Question

8.Ambidentate ligands like NO2 and SCN are :
a unidentate
b) didentate
c) polydentate
d) has variable denticity
​

Answer 1

Answer:

NO2 and SCN are Ambidentate ligands that are unidentate.

Explanation:

• A ligand is an ion or molecule that donates two electrons to a central metal atom or ion to form a coordination complex.
• The Latin root of the term "ligand" means "to tie or bind." Anions, cations, and neutral substances can all function as ligands.

• Since both groups can form bonds at different points but not simultaneously, we can infer that they are unidentate.

• Negative ions or neutral molecules with only one donor atom are referred to as unidentate ligands.

• Cl2, NH3, and other examples of unidentate ligands.
• Bidentate ligands: These are types of ligands that have two donating sites accessible for forming the coordination bond with the main metal atom.

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Answer 2

Answer:

Ambidendate: It is that unidentate ligand which can ligate through two different atoms present in it to central atom/ion giving two different coordination entity. Examples are NO2– and SCN– ions.

Explanation:

Step : 1 Unidentate, bidentate, and tridentate are the different kinds of ligands. The species known as unidentate has the capacity to create a coordinate bond with a single donor atom. There will only be one donation location available in the unidentate ligands. Cl2, NH3, and other examples of unidentate ligands. Unidentate or monodentate ligands are molecules (or atoms, or ions) containing only one donor atom that will coordinate. One atom from a monodentate ligand interacts directly with the centre atom of a posh. Ammonia and the central metal atoms or ions share a single pair of electrons.

Step : 2 Ambidendate: This is an unidentified ligand that has two separate atoms that can bind to the central atom or ion to produce two distinct coordination entities. Examples are the ions SCN and NO2. Monodentate ligands that have two potential binding sites are known as ambidentate ligands. As an example, the central metal atom or ion can connect to the nitrate ion at either the nitrogen atom or one of the oxygen atoms.

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