427-Pretest (2024)

What is a coordination compound?

• A metal complex with non-metal atoms

• A central metal atom or ion surrounded by a set of ligands

• A compound with covalent bonds only

• • A compound with ionic bonds only

Which of the following is an example of a coordination compound?

• NaCl

• H₂O

• Fe(CO)₅

• CO₂

What is the coordination number of a metal complex?

• The total number of atoms in the complex

• The number of ligands attached to the central metal

• The oxidation state of the metal

• No correct answer

Which ligand is an example of a bidentate ligand?

• Triethylenediamine

• Ethylenediaminetetraacetato

• Acetylacetonato

• Aqua

What type of bond is formed between a metal center and a ligand in a coordination compound?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Coordinate covalent bond

Which factor does NOT control the coordination number of a complex?

• Size of the central atom or ion

• Color of the complex

• Steric interaction between ligands

• • Electronic interactions between the central atom or ion and the ligands

What type of ligands have more than one different potential donor atom?

• Monodentate

• Bidentate

• Polydentate

• Ambidentate

What is the oxidation state of Fe in [Fe(CN)₆]^4-?

• +2

• +3

• 0

• +1

Which of the following complexes is square planar?

• [Zn(NH₃)₄]²⁺

• [PtCl₄]^2-

• [FeCl₄]^-

• [CuCl₂]^-

What is the charge of a complex if the central metal has an oxidation state of +2 and it is bonded to four chloride ligands?

• +4

• +2

• 0

• -2