PISA

What defines transition elements in the periodic table?

• They have a full d-orbital.

• They form ions with a partially-filled d-orbital.

• They are located in the f-block.

• They have only one oxidation state.

Which of the following elements is not considered a transition metal?

• Nickel

• Zinc

• Copper

• Iron

What is the electron configuration of manganese (Mn)?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10

• 1s2 2s2 2p6 3s2 3p6 4s2 3d5

• 1s2 2s2 2p6 3s2 3p6 4s2 3d1

• 1s2 2s2 2p6 3s2 3p6 4s2 3d4

What happens to the 4s electrons when transition metals form ions?

• They are converted to 3d electrons.

• They are gained.

• They are lost before the 3d electrons.

• They are retained.

Which of the following is a property of transition elements?

• They have no variable oxidation states.

• They form colored compounds.

• They can only exist in one oxidation state.

• They do not act as catalysts.

What type of bond is formed between ligands and transition metal ions?

• Metallic bond

• Ionic bond

• Coordinate bond

• Hydrogen bond

What is the coordination number for smaller ligands like water?

• 2

• 4

• 8

• 6

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

• Water

• Ethylenediamine

• Ammonia

• Chloride ion

What is the color of Fe2+ ions?

• Pale green

• Brown

• Yellow

• Blue

What type of isomerism can octahedral complex ions exhibit?

• Both geometric and optical isomerism

• Optical isomerism only

• No isomerism

• Geometric isomerism only