f-Block Elements - Lanthanoids and Actinoids

Grade 12 Chemistry — f-Block Elements - Lanthanoids and Actinoids: 25 practice questions with instant scoring and explanations.

1. Lanthanoids have electronic configuration:
2. Actinoids have electronic configuration:
3. Lanthanide series begins with:
4. Actinide series begins with:
5. The common oxidation state of lanthanoids is:
6. Lanthanoids show variable oxidation states:
7. Europium shows oxidation states of:
8. Cerium shows oxidation states of:
9. Lanthanide contraction is the decrease in:
10. The cause of lanthanide contraction is:
11. Actinoids are mostly:
12. Uranium-235 is used in:
13. Plutonium is produced from:
14. The common oxidation state of actinoids is:
15. Uranium has oxidation state of:
16. Lanthanide ions are colored due to:
17. Lanthanide compounds are mostly:
18. Lanthanoid hydroxides are:
19. Gadolinium has:
20. The f-block elements are called:
21. Number of lanthanoids is:
22. Number of actinoids is:
23. The position of lanthanoids in periodic table is:
24. Lanthanoids have similar chemistry due to:
25. Uranium compounds used industrially include: