Reading the definitions back

Exercise and reference answers

Questions

1. Question

   Ions or molecules bound to the central atom are called

   Choices

   1. counter ions
   2. ligands
   3. polyhedra

   Correct choice

   ligands

2. Question

   Central metal atoms in complexes act as

   Choices

   1. Lewis bases
   2. neither
   3. Lewis acids

   Correct choice

   Lewis acids

3. Question

   The most common coordination polyhedra are

   Choices

   1. octahedral, square planar, tetrahedral
   2. linear and bent
   3. cubic and hexagonal

   Correct choice

   octahedral, square planar, tetrahedral

4. Question

   EDTA⁴⁻ binds through

   Choices

   1. six carbon atoms
   2. two N and four O atoms
   3. four N and two O atoms

   Correct choice

   two N and four O atoms

Explanation