Inorganic Chemistry 2: Transition Metals Multiple Choice Questions

1. Which of the following elements is not a transition metal?

Copper

Zinc

Iron

Manganese

Correct! Wrong!

2. Which of the following statements is NOT correct?

Both Fe²⁺ and Fe³⁺ can catalyse the reaction between I^- and S₂O₈^2-

Aqueous solutions of Fe²⁺ appear green due to the absorption of green light

[Fe(C₂O₄)₃]^4- has a coordination number of 6

[Fe(H₂O)₆]³⁺ has a lower pKa than [Fe(H₂O)₆]²⁺

Correct! Wrong!

3. Which of the following complexes has 90° bond angles?

[Ag(NH₃)₂]⁺

[CoCl₄]^2-

[Pt(NH₃)₂Cl₂]

[CuCl₄]^2-

Correct! Wrong!

4. Which of the following ions does NOT form coloured solutions?

Cu⁺

Mo²⁺

Cr³⁺

Co²⁺

Correct! Wrong!

5. Which of the following reactions of Cu²⁺ is an example of a chelation reaction?

[Cu(H₂O)₆]²⁺ + 2OH^- → [Cu(H₂O)₄(OH)₂] + 2H₂O

[Cu(H₂O)₆]²⁺ + CO₃^2- → CuCO₃ + 6H₂O

[Cu(H₂O)₆]²⁺ + EDTA^4- → [CuEDTA]^2- + 6H₂O

[Cu(H₂O)₆]²⁺ + 2NH₃ → [Cu(H₂O)₄(OH)₂] + 2NH₄⁺

Correct! Wrong!

6. What is the bond angle of the N-H bond in ammonia in the following complex:

[Co(NH₃)₆]²⁺

90°

180°

107°

109.5°

Correct! Wrong!

7. 30.0 g of an impure Iron(II) salt was acidified with dilute H₂SO₄.

The solution that was produced required 25.0 cm³ of 0.400 mol dm^-3 KMnO₄ for complete oxidation.

What percentage of the impure salt is Fe²⁺?

9.30 %

18.6 %

1.86 %

16.7 %

Correct! Wrong!

8. Which of the following complexes forms both geometric and optical isomers?

[Ni(NH₂CH₂CH₂NH₂)₃]²⁺

[Ni(H₂O)₄(OH)₂]

[Ni(NH₂CH₂CH₂NH₂)₂C₂]

[NiCl₄]^2-

Correct! Wrong!

9. What is the electron configuration of Cu²⁺?

Ar] 4s²3d⁷

[Ar] 4s¹ 3d⁸

[Ar] 3d⁹

1s²2s²2p⁶ 3s² 3p⁶ 4s² 3d⁷

Correct! Wrong!

10. Which of the following is properties is NOT a characteristic of transition metal ions?

Variable oxidation states

Form coloured solutions

Act as catalysts

React with water to produce strong alkaline solutions and Hydrogen gas

Correct! Wrong!

Gemma Shearer