s-Block and p-Block Elements - One Line Questions

1. What is the common oxidation state of alkaline earth metals (Group 2 elements)? — +2
2. The element that exhibits the most pronounced inert pair effect is: — Thallium
3. Which of the following alkaline earth metals is the most electropositive? — Radium
4. Which element in Group 13 is a metalloid and a key component in semiconductors? — Boron
5. The first ionization energy generally decreases down the group for both s-block and p-block elements. Which is an exception to this trend in Group 13? — Aluminum to Gallium
6. Which element in Group 14 exhibits allotropy and forms compounds in +2 and +4 oxidation states? — Lead
7. Which element in Group 14 forms stable peroxides and superoxides? — Silicon
8. Which element in Group 14 is used in semiconductors? — Silicon
9. The element that forms the most acidic oxide in Group 14 is: — Carbon
10. Which of the following is the most reactive halogen? — Fluorine
11. The hydrides formed by alkali metals are: — Ionic and basic
12. What is the most common allotrope of carbon in the p-block? — Graphite
13. Which allotrope of carbon is used as a lubricant? — Graphite
14. The oxidizing power of halogens decreases in the order: — F₂ > Cl₂ > Br₂ > I₂
15. Which element is the most electronegative in the p-block? — Fluorine
16. Which element in Group 17 is a liquid at room temperature? — Bromine
17. The allotrope of carbon that is the hardest naturally occurring substance is: — Diamond
18. The inert pair effect is most pronounced in which group of the p-block elements? — Group 15
19. Which of the following is a noble gas used in lighting (e.g., neon signs)? — Neon
20. Which of the following is a characteristic property of alkali metals (Group 1 elements)? — Strong reducing agents
21. The anomalous behavior of Lithium compared to other alkali metals is due to: — Its high charge density
22. The anomalous behavior of Boron compared to other Group 13 elements is due to: — Its small size and high electronegativity
23. The anomalous behavior of Magnesium compared to other alkaline earth metals is NOT due to: — Its low electronegativity
24. The reason for the higher melting point of Group 1 elements compared to Group 2 elements is: — Weaker metallic bonding in Group 1 due to loss of one electron
25. Which of the following is a strong base formed by an alkali metal? — All of the above
26. Which of the following alkali metals is the most reactive? — Cesium
27. Which alkali metal has the lowest density? — Lithium
28. Which alkali metal is used in photoelectric cells? — Potassium
29. The most electronegative element in the s-block is: — Lithium
30. Which of the following is a characteristic property of halogens (Group 17 elements)? — Tendency to gain one electron
31. Which alkaline earth metal imparts a brick-red color to a flame test? — Calcium
32. The compound formed between an alkali metal and water is: — Metal hydroxide and hydrogen gas
33. Which of the following is the most stable allotrope of sulfur? — Rhombic sulfur
34. Which noble gas is used in balloons for weather forecasting due to its low density and non-flammability? — Helium
35. Which element in Group 15 has the highest melting and boiling points? — Bismuth
36. The general electronic configuration of s-block elements is: — ns¹ or ns²
37. Which element in Group 16 is a metalloid and a semiconductor? — Tellurium
38. Which of the following forms a stable compound with hydrogen, like PH₃? — Nitrogen
39. The element that exhibits the highest melting point in Group 16 is: — Tellurium
40. The allotrope of phosphorus that is white and spontaneously ignites in air is: — Yellow phosphorus
41. The diagonal relationship between Lithium and Magnesium is due to: — Similar atomic radii and charge density
42. The diagonal relationship between Beryllium and Aluminum is due to: — Similar atomic radii and charge density
43. Which alkali metal forms a stable nitride (Li₃N)? — Lithium
44. Which of the following is a strong oxidizing agent? — Fluorine
45. The most abundant element in the Earth's crust that belongs to the s-block is: — Calcium
46. Which element is known as the 'king of chemicals' and is a major component of sulfuric acid production? — Sulfur
47. Which element in Group 16 is essential for respiration? — Oxygen
48. Which of the following is NOT a property of Group 1 elements? — They have high melting points.
49. The diagonal relationship between Sodium and Magnesium is NOT observed because: — Their charge densities are significantly different
50. Which of the following is NOT a characteristic of p-block elements? — They are generally non-metals.
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