NEET UG - Modern periodic law, periodic table structure, s p d and f block elements Online Test (MCQ Quiz)

1. Who is credited with proposing the Modern Periodic Law?

A) Dmitri Mendeleev B) Antoine Lavoisier C) Henry Moseley D) Lothar Meyer

2. According to the Modern Periodic Law, the physical and chemical properties of elements are periodic functions of their:

A) Atomic mass B) Atomic number C) Number of neutrons D) Valence electrons

3. The Modern Periodic Table is based on the atomic number of elements. What does the atomic number represent?

A) The number of protons in the nucleus B) The number of neutrons in the nucleus C) The total number of nucleons D) The number of electrons in the outermost shell

4. How many periods are there in the Modern Periodic Table?

A) 5 B) 6 C) 7 D) 8

5. How many groups are there in the Modern Periodic Table?

A) 15 B) 16 C) 17 D) 18

6. Which period is the longest in the Modern Periodic Table?

A) Period 1 B) Period 3 C) Period 6 D) Period 7

7. Elements in the same group of the periodic table have similar:

A) Atomic numbers B) Number of electron shells C) Number of valence electrons D) Physical states at room temperature

8. Elements in the same period of the periodic table have the same:

A) Number of valence electrons B) Number of occupied electron shells C) Chemical reactivity D) Metallic character

9. The s-block elements are characterized by the filling of:

A) p-orbitals B) d-orbitals C) s-orbitals D) f-orbitals

10. Which of the following groups constitutes the s-block elements?

A) Group 1 and Group 2 B) Group 13 to Group 18 C) Group 3 to Group 12 D) Group 1 and Group 18

11. Alkali metals belong to which block of the periodic table?

A) p-block B) d-block C) f-block D) s-block

12. Alkaline earth metals belong to which block of the periodic table?

A) s-block B) p-block C) d-block D) f-block

13. The p-block elements are characterized by the filling of:

A) s-orbitals B) p-orbitals C) d-orbitals D) f-orbitals

14. Which groups of the periodic table constitute the p-block elements?

A) Group 1 and 2 B) Group 3 to 12 C) Group 13 to 18 D) Group 17 and 18

15. Which of the following elements is a non-metal and belongs to the p-block?

A) Sodium B) Magnesium C) Chlorine D) Zinc

16. The d-block elements are also known as:

A) Alkali metals B) Halogens C) Transition elements D) Inner transition elements

17. The d-block elements are characterized by the filling of:

A) Outer s-orbitals B) Inner d-orbitals C) Outer p-orbitals D) Inner f-orbitals

18. Which groups of the periodic table constitute the d-block elements?

A) Group 1, 2, 13-18 B) Group 3 to 12 C) Lanthanides and Actinides D) Group 1, 2, 13-16

19. Which of the following is a characteristic property of transition elements?

A) They form acidic oxides. B) They exhibit variable oxidation states. C) They are highly electropositive. D) They have a stable electron configuration.

20. The f-block elements are known as:

A) Transition elements B) Noble gases C) Inner transition elements D) Alkaline earth metals

21. The f-block elements are characterized by the filling of:

A) d-orbitals B) p-orbitals C) s-orbitals D) f-orbitals

22. The two series of f-block elements are called:

A) Actinides and Transactinides B) Lanthanides and Actinides C) Lanthanoids and Actinoids D) Inner and Outer transition series

23. Lanthanides are the elements where the filling of f-orbitals occurs in the:

A) n=4 shell B) n=5 shell C) n=6 shell D) n=7 shell

24. Actinides are the elements where the filling of f-orbitals occurs in the:

A) n=4 shell B) n=5 shell C) n=6 shell D) n=7 shell

25. Which element is the first member of the lanthanide series?

A) Lanthanum (La) B) Cerium (Ce) C) Actinium (Ac) D) Thorium (Th)

26. Which element is the first member of the actinide series?

A) Thorium (Th) B) Uranium (U) C) Actinium (Ac) D) Protactinium (Pa)

27. All actinides are:

A) Non-metals B) Metalloids C) Radioactive D) Noble gases

28. The total number of elements in the 7th period of the periodic table is:

A) 18 B) 28 C) 32 D) 36

29. Elements with atomic numbers greater than 92 are called:

A) Lanthanides B) Actinides C) Transuranic elements D) Noble gases

30. Which of the following is NOT a characteristic property of s-block elements?

A) Highly electropositive B) Low ionization enthalpy C) Tendency to form covalent compounds D) Strong reducing agents

31. Which of the following is a characteristic property of p-block elements?

A) Form +1 oxidation state only B) Tend to gain or lose electrons to form ionic compounds C) Exhibit a wide range of oxidation states D) Are generally soft and have low melting points

32. The elements of Group 18 are known as:

A) Halogens B) Chalcogens C) Noble gases D) Alkaline earth metals

33. Noble gases have:

A) High ionization energy B) Low ionization energy C) High electron affinity D) Tendency to form positive ions easily

34. Which period begins with Hydrogen?

A) Period 1 B) Period 2 C) Period 3 D) Period 4

35. The number of elements in the first period is:

A) 2 B) 8 C) 10 D) 18

36. The number of elements in the second period is:

A) 2 B) 8 C) 10 D) 18

37. The number of elements in the third period is:

A) 2 B) 8 C) 10 D) 18

38. The number of elements in the fourth period is:

A) 8 B) 10 C) 18 D) 32

39. The number of elements in the fifth period is:

A) 8 B) 10 C) 18 D) 32

40. The number of elements in the sixth period is:

A) 18 B) 28 C) 32 D) 36

41. Which element has the electronic configuration $1s^2 2s^2 2p^6 3s^1$?

A) Lithium B) Sodium C) Potassium D) Rubidium

42. Which element has the electronic configuration $1s^2 2s^2 2p^6 3s^2 3p^4$?

A) Sulfur B) Oxygen C) Selenium D) Tellurium

43. Which element has the electronic configuration $[Ar] 3d^{10} 4s^1$?

A) Zinc B) Copper C) Nickel D) Gold

44. Which element has the electronic configuration $[Xe] 4f^7 6s^2$?

A) Gadolinium B) Europium C) Terbium D) Dysprosium

45. The element with atomic number 118 belongs to which block?

A) s-block B) p-block C) d-block D) f-block

46. The element with atomic number 3 belongs to which block?

A) s-block B) p-block C) d-block D) f-block

47. The element with atomic number 26 belongs to which block?

A) s-block B) p-block C) d-block D) f-block

48. The element with atomic number 58 belongs to which block?

A) s-block B) p-block C) d-block D) f-block

49. Metalloids are generally found along the boundary between metals and non-metals in the periodic table. Which block contains the most metalloids?

A) s-block B) p-block C) d-block D) f-block

50. Which of the following is a characteristic property of f-block elements?

A) High melting and boiling points B) Tendency to form colored compounds C) Inertness D) Formation of basic oxides only

Modern periodic law, periodic table structure, s p d and f block elements - Online Test

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