This comprehensive set of MCQs on S and P Block Elements is designed to cover all essential topics required for success in the Medical and Dental College Admission Test (MDCAT). Focused on key concepts such as the properties, trends, and reactivity of s- and p-block elements, these MCQs aim to help students build a solid understanding of the periodic table’s main groups and their importance in chemical reactions and biological processes.
Who should practice S and P Block Elements MCQs?
- Students preparing for the MDCAT who want to deepen their understanding of the chemistry of s- and p-block elements and their applications in medicine and biochemistry.
- Individuals seeking to enhance their knowledge of group trends, electronic configurations, and the chemical behavior of alkali metals, alkaline earth metals, halogens, and noble gases.
- University students targeting high-yield topics like the reactivity of Group 1 and Group 2 elements, the unique properties of Group 13-18 elements, and the significance of their compounds.
- Anyone aiming to strengthen their understanding of how these elements and their compounds are involved in biological and physiological processes.
- Candidates focused on developing problem-solving skills related to the reactivity, oxidation states, and periodic trends of s- and p-block elements.
- Suitable for all students preparing for the MDCAT, including those looking to improve their exam confidence in chemistry and gain a deeper understanding of these elements and their role in scientific applications.
1. Which of the following elements belongs to Group 1 (alkali metals)?
A) Magnesium
B) Sodium
C) Calcium
D) Aluminium
View AnswerB
2. What is the electronic configuration of sodium (Na)?
A) 1s² 2s² 2p⁶ 3s¹
B) 1s² 2s² 2p⁶ 3s²
C) 1s² 2s² 2p⁶
D) 1s² 2s² 2p⁶ 3p¹
View AnswerA
3. Which alkali metal reacts most vigorously with water?
A) Lithium
B) Sodium
C) Potassium
D) Cesium
View AnswerD
4. What trend in atomic size is observed as we move down Group 1?
A) Atomic size increases
B) Atomic size decreases
C) Atomic size remains constant
D) Atomic size first decreases, then increases
View AnswerA
5. Which element has the highest ionization energy in Group 2?
A) Beryllium
B) Magnesium
C) Calcium
D) Strontium
View AnswerA
6. Which of the following Group 2 elements forms the least soluble hydroxide?
A) Magnesium
B) Calcium
C) Barium
D) Strontium
View AnswerC
7. Which Group 1 element is the least reactive?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerA
8. Which property decreases as we go down Group 2 elements?
A) Ionization energy
B) Atomic radius
C) Metallic character
D) Reactivity with water
View AnswerA
9. The alkali metals belong to which block of the periodic table?
A) p-block
B) d-block
C) s-block
D) f-block
View AnswerC
10. Which of the following is a chemical property of Group 1 elements?
A) Low reactivity
B) Forming basic oxides
C) High melting points
D) Formation of covalent bonds
View AnswerB
11. What is the trend in the melting point of Group 2 elements as you go down the group?
A) It increases
B) It decreases
C) It remains constant
D) It fluctuates
View AnswerB
12. Which Group 2 element is most reactive with water?
A) Beryllium
B) Magnesium
C) Calcium
D) Barium
View AnswerD
13. The ionic radius of alkali metals increases as you go down the group because:
A) The nuclear charge increases
B) The number of electron shells increases
C) The atomic number decreases
D) The shielding effect decreases
View AnswerB
14. Which Group 1 element has the highest electronegativity?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerA
15. What is the electronic configuration of magnesium (Mg)?
A) 1s² 2s² 2p⁶ 3s²
B) 1s² 2s² 2p⁶ 3s¹
C) 1s² 2s² 2p⁶ 3p²
D) 1s² 2s² 2p⁶ 4s²
View AnswerA
16. Which of the following elements belongs to the alkaline earth metals (Group 2)?
A) Potassium
B) Calcium
C) Sodium
D) Cesium
View AnswerB
17. Which of the following is true about the boiling points of alkali metals?
A) They increase down the group
B) They decrease down the group
C) They remain the same
D) They increase and then decrease
View AnswerB
18. Which of the following is NOT a physical property of alkali metals?
A) High density
B) Low melting points
C) Softness
D) High reactivity with air
View AnswerA
19. Which Group 1 metal forms the most stable oxide?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerA
20. What is the general trend in the ionization energy of alkali metals down the group?
A) It increases
B) It decreases
C) It remains constant
D) It fluctuates
View AnswerB
21. Which of the following alkaline earth metals forms the least soluble sulfate?
A) Magnesium
B) Calcium
C) Strontium
D) Barium
View AnswerD
22. What type of bonds do Group 2 elements generally form?
A) Ionic
B) Covalent
C) Metallic
D) Van der Waals
View AnswerA
23. Which Group 1 element has the lowest melting point?
A) Lithium
B) Potassium
C) Rubidium
D) Cesium
View AnswerD
24. Which of the following Group 2 elements has the largest atomic radius?
A) Beryllium
B) Magnesium
C) Calcium
D) Barium
View AnswerD
25. The trend in electropositivity among Group 1 elements is:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) First decreases, then increases
View AnswerA
26. Which Group 2 element does not react with water at room temperature?
A) Magnesium
B) Calcium
C) Strontium
D) Beryllium
View AnswerD
27. What is the trend in electronegativity among Group 2 elements?
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Increases, then decreases
View AnswerB
28. Which of the following elements has the highest second ionization energy?
A) Sodium
B) Magnesium
C) Calcium
D) Potassium
View AnswerA
29. Which property is NOT typical of Group 2 elements?
A) High reactivity with water
B) High ionization energy
C) Formation of basic oxides
D) Ionic bonding
View AnswerB
30. Which Group 1 element forms a carbonate that is stable to heat?
A) Sodium
B) Potassium
C) Lithium
D) Rubidium
View AnswerC
31. The reactivity of Group 2 elements with water:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates randomly
View AnswerA
32. What is the electronic configuration of beryllium (Be)?
A) 1s² 2s¹
B) 1s² 2s²
C) 1s² 2p²
D) 1s² 3s²
View AnswerB
33. Which of the following is a characteristic of alkaline earth metals?
A) Forming acidic oxides
B) Forming ionic compounds
C) Low reactivity
D) High melting points
View AnswerB
34. Which alkali metal forms the most stable peroxide?
A) Sodium
B) Potassium
C) Rubidium
D) Cesium
View AnswerA
35. Which of the following alkali metals does not form an oxide upon heating?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerC
36. The chemical reactivity of alkali metals increases down the group because:
A) Ionization energy increases
B) Ionization energy decreases
C) Electronegativity increases
D) Atomic size decreases
View AnswerB
37. Which alkaline earth metal hydroxide is the most soluble in water?
A) Magnesium hydroxide
B) Calcium hydroxide
C) Strontium hydroxide
D) Barium hydroxide
View AnswerD
38. Which Group 2 element has the lowest density?
A) Magnesium
B) Beryllium
C) Calcium
D) Strontium
View AnswerA
39. Which of the following is a physical property of alkali metals?
A) High melting points
B) Low density
C) High electronegativity
D) Brittle
View AnswerB
40. What is the trend in boiling points of Group 2 elements?
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerA
41. Which Group 2 metal reacts with water to produce hydrogen gas?
A) Beryllium
B) Magnesium
C) Calcium
D) Barium
View AnswerC
42. Which of the following compounds is formed when alkali metals react with halogens?
A) Oxides
B) Hydroxides
C) Halides
D) Carbonates
View AnswerC
43. What is the trend in the melting points of alkali metals as you go down the group?
A) Increases
B) Decreases
C) Remains constant
D) Increases then decreases
View AnswerB
44. Which element has the highest electropositivity in Group 1?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerD
45. The hydroxides of Group 1 elements are:
A) Neutral
B) Acidic
C) Basic
D) Amphoteric
View AnswerC
46. Which property increases down the Group 2 elements?
A) Electronegativity
B) Ionization energy
C) Reactivity
D) Melting point
View AnswerC
47. Which alkali metal has the largest atomic radius?
A) Lithium
B) Sodium
C) Potassium
D) Cesium
View AnswerD
48. What is the primary oxidation state of alkali metals in compounds?
A) +1
B) +2
C) +3
D) -1
View AnswerA
49. Which alkaline earth metal reacts with dilute acids to produce hydrogen?
A) Beryllium
B) Magnesium
C) Calcium
D) Strontium
View AnswerC
50. The alkali metals form:
A) Covalent compounds
B) Ionic compounds
C) Molecular compounds
D) Metallic compounds
View AnswerB
51. The ionization energy of alkali metals generally:
A) Increases from Li to Cs
B) Decreases from Li to Cs
C) Remains constant
D) Increases then decreases
View AnswerB
52. Which of the following elements has the largest ionic radius in Group 1?
A) Lithium
B) Sodium
C) Potassium
D) Cesium
View AnswerD
53. Which Group 1 metal is most commonly used in batteries?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerA
54. What is the typical oxidation state of alkaline earth metals in compounds?
A) +1
B) +2
C) -1
D) 0
View AnswerB
55. Which alkali metal has the highest melting point?
A) Lithium
B) Sodium
C) Potassium
D) Cesium
View AnswerA
56. Which Group 2 metal is the least reactive?
A) Beryllium
B) Magnesium
C) Calcium
D) Strontium
View AnswerA
57. The reactivity of alkaline earth metals with water generally:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates randomly
View AnswerA
58. Which alkali metal is the least dense?
A) Lithium
B) Sodium
C) Potassium
D) Cesium
View AnswerA
59. Which of the following alkali metals is stored in oil to prevent reaction with air?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerC
60. Which of the following has the highest boiling point in Group 2?
A) Beryllium
B) Magnesium
C) Calcium
D) Barium
View AnswerD
61. Which element in Group 2 is most likely to form a covalent bond?
A) Beryllium
B) Magnesium
C) Calcium
D) Strontium
View AnswerA
62. What happens to the electropositivity of Group 2 elements as you move down the group?
A) Increases
B) Decreases
C) Remains constant
D) Fluctuates
View AnswerA
63. Which of the following alkali metals can float on water?
A) Lithium
B) Sodium
C) Potassium
D) All of the above
View AnswerD
64. Which of the following is a property of beryllium?
A) Reacts vigorously with water
B) Forms covalent compounds
C) Is highly electropositive
D) Has low melting point
View AnswerB
65. What is the common oxidation state of alkaline earth metals in their compounds?
A) +1
B) +2
C) +3
D) -1
View AnswerB
66. Which alkali metal reacts with oxygen to form a superoxide?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerC
67. What is the main reason for the increasing reactivity of alkali metals down the group?
A) Increased electronegativity
B) Decreased ionization energy
C) Increased atomic radius
D) Decreased shielding effect
View AnswerB
68. Which alkaline earth metal hydroxide is the least soluble in water?
A) Magnesium hydroxide
B) Calcium hydroxide
C) Strontium hydroxide
D) Barium hydroxide
View AnswerA
69. Which of the following is true for the ionic radii of Group 2 metals?
A) They decrease down the group
B) They increase down the group
C) They remain constant
D) They fluctuate
View AnswerB
70. What type of compound do alkaline earth metals typically form with halogens?
A) Covalent
B) Ionic
C) Molecular
D) Metallic
View AnswerB
71. The atomic radius of alkaline earth metals:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) First decreases, then increases
View AnswerA
72. Which Group 2 element is used in fireworks for its bright white flame?
A) Magnesium
B) Calcium
C) Strontium
D) Barium
View AnswerC
73. Which of the following alkaline earth metals is the most reactive?
A) Beryllium
B) Calcium
C) Magnesium
D) Barium
View AnswerD
74. The ionization energy of Group 2 elements:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerB
75. Which Group 1 element is most commonly used in rechargeable batteries?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerA
76. Which of the following alkaline earth metals is least likely to form a sulfate?
A) Barium
B) Calcium
C) Magnesium
D) Beryllium
View AnswerD
77. Which alkali metal is used in the preparation of NaCl from seawater?
A) Sodium
B) Potassium
C) Lithium
D) Cesium
View AnswerA
78. The melting point of alkaline earth metals generally:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerB
79. Which of the following alkaline earth metals is used in fireworks to produce a green color?
A) Barium
B) Calcium
C) Strontium
D) Magnesium
View AnswerA
80. What is the most stable oxidation state of lithium in compounds?
A) +1
B) +2
C) -1
D) 0
View AnswerA
81. Which alkali metal has the lowest boiling point?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerC
82. Which of the following is the strongest reducing agent among alkali metals?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerC
83. The electropositivity of alkali metals generally:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerA
84. Which alkaline earth metal is known for its use in alloys?
A) Beryllium
B) Calcium
C) Magnesium
D) Strontium
View AnswerC
85. Which property is characteristic of alkali metal oxides?
A) They are acidic
B) They are neutral
C) They are basic
D) They are amphoteric
View AnswerC
86. The first ionization energy of alkali metals:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerB
87. Which of the following alkali metals is the most reactive with water?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerC
88. Which alkaline earth metal is used in the construction of light-weight aircraft?
A) Beryllium
B) Magnesium
C) Calcium
D) Strontium
View AnswerB
89. Which Group 2 element has the highest melting point?
A) Beryllium
B) Magnesium
C) Calcium
D) Barium
View AnswerA
90. The solubility of alkaline earth metal hydroxides generally:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerA
91. Which alkali metal is the most abundant in the earth’s crust?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
View AnswerB
92. What is the primary use of potassium hydroxide?
A) Fertilizer
B) Soap making
C) Food preservation
D) Battery production
View AnswerB
93. Which of the following is a characteristic of alkaline earth metals?
A) They have high ionization energies
B) They are highly electronegative
C) They readily form oxides
D) They are gases at room temperature
View AnswerC
94. What is the primary use of barium sulfate?
A) In fireworks
B) In medical imaging
C) In metallurgy
D) As a lubricant
View AnswerB
95. Which alkali metal is used in making glass?
A) Sodium
B) Potassium
C) Lithium
D) Rubidium
View AnswerA
96. The density of alkaline earth metals generally:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerA
97. Which of the following has the lowest melting point in Group 2?
A) Beryllium
B) Magnesium
C) Calcium
D) Barium
View AnswerC
98. Which alkali metal forms a colored flame when burned?
A) Lithium
B) Sodium
C) Potassium
D) All of the above
View AnswerD
99. The alkali metal that is stored under oil is:
A) Sodium
B) Potassium
C) Lithium
D) Rubidium
View AnswerB
100. The trend in electronegativity among Group 1 elements is:
A) Increases down the group
B) Decreases down the group
C) Remains constant
D) Fluctuates
View AnswerB