Coordination Compounds Quiz
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Questions and Answers

What is a central atom or ion in a coordination entity?

The atom/ion to which a fixed number of ions/groups are bound in a definite geometrical arrangement around it.

Define ligands in the context of a coordination entity.

Ligands are the neutral or negative ions bound to the central metal or ion that donate a pair/s of electrons to it.

What is the classification of ligands based on the number of donor atoms they have?

Monodentate/Unidentate, Didentate, and Polydentate ligands.

What are chelating ligands?

<p>Chelating ligands are di- or polydentate ligands that use two or more donor atoms to bind to a single metal ion, forming ring-like complexes.</p> Signup and view all the answers

What is an ambidentate ligand?

<p>An ambidentate ligand is a ligand that can ligate through two different donor atoms.</p> Signup and view all the answers

What are coordination compounds?

<p>Compounds in which a central metal atom or ion is linked to a number of ions or neutral molecules by coordinate bonds.</p> Signup and view all the answers

What are Werner's main postulates regarding coordination compounds?

<p>i) Metals exhibit primary and secondary valencies. ii) Primary valencies are ionisable and satisfied by negative ions. iii) Secondary valencies are non-ionisable and satisfied by neutral molecules or negative ions. iv) Secondary valences are fixed for a metal in a complex.</p> Signup and view all the answers

How do double salts differ from complexes?

<p>Double salts dissociate into simple ions completely when dissolved in water, while complexes do not dissociate into individual ions.</p> Signup and view all the answers

What is a coordination entity?

<p>The central metal ion or atom bonded to a fixed number of ions or molecules represented within a square bracket.</p> Signup and view all the answers

What is the significance of primary valencies in coordination compounds?

<p>Primary valencies are ionisable and are satisfied by negative ions.</p> Signup and view all the answers

Explain the concept of secondary valencies in coordination compounds.

<p>Secondary valencies are non-ionisable and are satisfied by neutral molecules or negative ions.</p> Signup and view all the answers

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