Transition elements: electronic configuration occurrence and general trends, oxidation states and catalytic behaviour - Question Bank
1. The catalytic activity of a transition metal catalyst is often explained by:
2. Which of the following transition metals is most abundant in the Earth's crust?
3. The oxidation state of Manganese in MnO₄⁻ is:
4. Which of the following is a key characteristic of transition elements that allows them to form alloys?
5. The electronic configuration of Chromium (Cr) is:
6. Which of the following is an example of a homogeneous catalyst involving a transition metal?
7. The relative stability of various oxidation states of transition metals is related to:
8. The complex ion [Cu(NH₃)₄]²⁺ is blue. This colour is due to:
9. Which of the following transition metal ions is paramagnetic?
10. The electronic configuration of Vanadium (V) is:
11. The term 'transition element' is generally applied to elements that have:
12. Which of the following is a common use of transition metals in alloys for increased strength and hardness?
13. The highest oxidation state of Ruthenium (Ru) is:
14. The electronic configuration of Scandium (Sc) is:
15. Transition metals form alloys because they have:
16. The colour of CuSO₄·5H₂O is blue due to the presence of:
17. Which of the following is NOT an actinide element?
18. The reason for the small change in atomic radii across the second and third transition series is:
19. Which of the following transition metals is liquid at room temperature?
20. The highest oxidation state observed in the first transition series is for:
21. The element with electronic configuration [Ar] 3d⁵ 4s¹ is:
22. Which of the following is a common use of transition metal compounds as pigments?
23. The density of transition elements generally:
24. Which of the following is the characteristic electronic configuration of Lanthanides?
25. The catalytic activity of transition metals is enhanced by their ability to:
26. Which of the following transition metal ions is colourless?
27. The element with the electronic configuration [Xe] 4f¹⁴ 5d¹⁰ 6s² is:
28. The magnetic behaviour of transition metals is generally:
29. Which of the following is a common oxidation state for Iron (Fe)?
30. The general trend in ionization enthalpy across a period for transition elements is:
31. The electronic configuration of Copper (Cu) is [Ar] 3d¹⁰ 4s¹ due to:
32. Which of the following is an example of a transition metal used as a catalyst in the hydrogenation of vegetable oils?
33. The colour of transition metal compounds is mainly due to:
34. Which of the following transition metals has the highest melting point?
35. The highest oxidation state exhibited by an element is often equal to:
36. The oxidation state of Chromium in K₂Cr₂O₇ is:
37. Which of the following is a characteristic property of Actinides but not Lanthanides?
38. The trend in the atomic radii of transition elements across a period is generally:
39. Which transition metal ion is responsible for the blue colour of the flame test in some cases?
40. The occurrence of transition elements in nature is primarily as:
41. Which of the following is the most common oxidation state of Manganese (Mn)?
42. The catalytic activity of transition metals is attributed to:
43. Which of the following transition metals commonly exhibits an oxidation state of +1?
44. The ability of transition metals to exhibit variable oxidation states is primarily due to:
45. Which element is known for its variable oxidation states and is commonly used as a catalyst in the Haber process?
46. Lanthanides and Actinides belong to which block of the periodic table?
47. The general electronic configuration of inner transition elements (f-block) is:
48. Which of the following is NOT a characteristic property of transition metals?
49. Transition elements are found in which block of the periodic table?
50. Which of the following is the characteristic electronic configuration of transition elements?