Addition or Molecular Compounds

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Questions and Answers

Which ligand classification is based on the number of donor atoms present?

  • Monodentate, bidentate, and tridentate (correct)
  • Bidentate, tridentate, and pentadentate
  • Monodentate, tetradentate, and hexadentate
  • Tetradentate, pentadentate, and hexadentate

Which of the following is an example of a bidentate ligand?

  • NO
  • Py (Pyridine)
  • H₂O
  • CO₂ (correct)

Why do metal carbonyls effectively obey the EAN rule?

  • Due to their strong magnetic properties
  • Due to their high reactivity
  • Because they contain multiple donor atoms
  • Because they exist in a zero oxidation state (correct)

What is the effective atomic number (EAN) of Co in the compound Co(CO)₄?

<p>72 (A)</p> Signup and view all the answers

What are addition or molecular compounds?

<p>Compounds formed by mixing simple salts in molecular proportions resulting in new crystalline compounds (C)</p> Signup and view all the answers

What is the effective atomic number (EAN) of V in the compound V(CO)₆?

<p>35 (C)</p> Signup and view all the answers

What is the main difference between double salts and complex salts?

<p>Double salts break down into their constituents when dissolved in water, while complex salts retain their identity even in solution (B)</p> Signup and view all the answers

What is the role of ligands in coordination compounds?

<p>Ligands form coordinate bonds with the central metal atom or ion (B)</p> Signup and view all the answers

Which type of compound retains its identity even in solution and has properties different from those of its constituents?

<p>Complex salts (D)</p> Signup and view all the answers

In modern usage, how is the complex ion shown which behaves as a single unit?

<p>Enclosed in square brackets, e.g. [Fe(CN)] (D)</p> Signup and view all the answers

What prefixes are used for indicating multiple ligands in names like ethylenediamine and dipyridyl?

<p>di, tri, tetra (D)</p> Signup and view all the answers

What prefixes are used for complicated ligands like ethylenediamine and dipyridyl, which already have the prefixes di, tri in their names?

<p>bis, tris, tetrakis (A)</p> Signup and view all the answers

Which type of valency is equal to the coordination number of the metal in coordination compounds?

<p>Secondary valency (A)</p> Signup and view all the answers

Which theory postulates that metals in coordination compounds possess two types of valency: primary and secondary valency?

<p>Werner's theory (B)</p> Signup and view all the answers

What type of species satisfies the primary valency in a coordination compound according to Werner's theory?

<p>Anions (A)</p> Signup and view all the answers

How are simple salts named?

<p>Cation followed by anion (D)</p> Signup and view all the answers

What is the naming order for complex ions?

<p>Ligands, central metal ion (A)</p> Signup and view all the answers

How are negative ligands named?

<p>Ends in -O (D)</p> Signup and view all the answers

What is the naming convention for neutral ligands?

<p>Use of special names like aqua, ammine, carbonyl (B)</p> Signup and view all the answers

How are simple ligands like chloride (Cl⁻) and cyanide (CN⁻) named?

<p>Named as the molecules (A)</p> Signup and view all the answers

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