Transition Metals: Properties, Reactions, and Applications

Question 1

Which of the following is the most common oxidation state of copper?

Accepted Answer

+2

Answer

+1

Answer

+3

Answer

+4

Question 2

Which of the following is a d-block element?

Accepted Answer

Manganese

Answer

Arsenic

Answer

Potassium

Answer

Calcium

Question 3

Which of the following is a property of transition metal ions?

Accepted Answer

Paramagnetism

Answer

High solubility in nonpolar solvents

Answer

Low reactivity

Answer

Inertness towards reduction

Question 4

Which of the following is a transition metal compound used in medicine?

Accepted Answer

Cisplatin

Answer

Aspirin

Answer

Paracetamol

Answer

Ibuprofen

Question 5

Which of the following properties is characteristic of transition metals?

Accepted Answer

High electrical conductivity

Answer

Low melting point

Answer

Non-magnetic

Answer

Brittleness

Question 6

Which of the following is the correct IUPAC name for the complex [Co(NH3)₄Cl₂]Cl?

Accepted Answer

Tetraamminechloridocobalt(III) chloride

Answer

Tetraamminechlorocobalt(III) chloride

Answer

Diamminetetrachlorocobalt(III) chloride

Answer

Dichlorotetraamminecobalt(III) chloride

Question 7

Which of the following is a characteristic of ferromagnetism?

Accepted Answer

Permanent magnetic field

Answer

Random alignment of magnetic moments

Answer

Low Curie temperature

Answer

Induced magnetic field

Question 8

Which of the following transition metals is commonly used in the production of stainless steel?

Accepted Answer

Chromium

Answer

Iron

Answer

Nickel

Answer

Copper

Question 9

Which of the following elements is classified as a d-block element?

Accepted Answer

Iron

Answer

Sodium

Answer

Calcium

Answer

Chlorine

Question 10

Which of the following is a consequence of the Jahn-Teller effect in octahedral complexes?

Accepted Answer

Tetragonal distortion

Answer

Trigonal distortion

Answer

Square planar distortion

Answer

No distortion

Question 11

What type of reaction is the conversion of [Co(NH3)5Cl]²⁺ to [Co(NH3)5OH2]²⁺?

Accepted Answer

Ligand exchange

Answer

Substitution

Answer

Redox

Answer

Acid-base

Question 12

Which of the following statements about transition metal complexes is false?

Accepted Answer

They are always diamagnetic

Answer

They can exhibit different colors depending on the nature of the ligand and the metal ion

Answer

They can possess magnetic properties due to unpaired electrons

Answer

They can act as catalysts by providing alternative reaction pathways

Question 13

What is the IUPAC name of the complex [Pt(NH3)4Cl2]?

Accepted Answer

Tetraamminedichloro­platinum(II)

Answer

Diamminetetrachloroplatinum(IV)

Answer

Chlorodiammineplatinum(II)

Answer

Platinum(IV) tetraammine

Question 14

The reaction [Fe(H2O)6]2+ + e- → [Fe(H2O)6]3+ can be classified as a:

Accepted Answer

Redox reaction

Answer

Substitution reaction

Answer

Addition reaction

Answer

Elimination reaction

Question 15

What is the coordination number of the central metal ion in the complex ion [Co(NH3)4Cl2]+?

Accepted Answer

6

Answer

4

Answer

5

Answer

7

Question 16

Which of the following compounds is considered an organometallic compound?

Accepted Answer

Ferrocene

Answer

Sodium chloride

Answer

Potassium permanganate

Answer

Water

Question 17

Which of the following ligands is a strong-field ligand?

Accepted Answer

CN⁻

Answer

H₂O

Answer

NH₃

Answer

Cl⁻

Question 18

What is the geometry of the complex [Ni(CN)₄]²⁻?

Accepted Answer

Square planar

Answer

Tetrahedral

Answer

Octahedral

Answer

Trigonal bipyramidal

Question 19

Which of the following is an example of a redox reaction involving a transition metal?

Accepted Answer

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Answer

CuSO₄ + 2NaOH → Cu(OH)₂ + Na₂SO₄

Answer

AgNO₃ + NaCl → AgCl + NaNO₃

Answer

CaCO₃ → CaO + CO₂