Tetravalency of carbon hybridization and shapes of simple molecules - Question Bank
1. Which of the following molecules has a central carbon atom that is sp² hybridized and exhibits a trigonal planar geometry?
2. Which of the following molecules has a central carbon atom that is sp³ hybridized and exhibits a tetrahedral geometry?
3. The concept of hybridization helps explain:
4. In a carbon atom forming a triple bond, how many pi bonds are present?
5. In a carbon atom forming a double bond, how many pi bonds are present?
6. Which type of overlap leads to the formation of pi bonds?
7. Which type of overlap leads to the formation of sigma bonds?
8. What is the approximate percentage of s-character in sp hybridization?
9. What is the approximate percentage of s-character in sp² hybridization?
10. What is the approximate percentage of s-character in sp³ hybridization?
11. The shape of a carbon free radical (e.g., CH₃•) is typically:
12. The hybridization of carbon in a free radical (e.g., CH₃•) is generally considered to be:
13. The C≡C triple bond length in ethyne (C₂H₂) is approximately:
14. The C=C double bond length in ethene (C₂H₄) is approximately:
15. The C-C single bond length in ethane (C₂H₆) is approximately:
16. In diamond, carbon atoms are hybridized as:
17. In graphite, carbon atoms are hybridized as:
18. What is the role of hybridization in explaining the shapes of molecules?
19. Which of the following is a consequence of carbon's tetravalency?
20. The shape of a carbanion (e.g., CH₃⁻) is:
21. The hybridization of carbon in a carbanion (e.g., CH₃⁻) is typically:
22. The shape of a carbocation (e.g., CH₃⁺) is:
23. The hybridization of carbon in a carbocation (e.g., CH₃⁺) is typically:
24. The shape of a molecule where a carbon atom is bonded to two other atoms and has no lone pairs is:
25. The shape of a molecule where a carbon atom is bonded to three other atoms and has no lone pairs is:
26. When a carbon atom forms two double bonds, its hybridization is:
27. When a carbon atom forms a single bond, a double bond, and a single bond, its hybridization is:
28. Which type of bond is formed by the overlap of one s orbital and three p orbitals?
29. Which type of bond is formed by the overlap of one s orbital and two p orbitals?
30. Which type of bond is formed by the overlap of one s orbital and one p orbital?
31. The hybridization of the carbon atom in a carbonyl group (C=O) is:
32. In CO₂, the carbon atom is hybridized as:
33. The shape of the carbon dioxide (CO₂) molecule is:
34. In benzene (C₆H₆), each carbon atom is hybridized as:
35. The presence of a triple bond in a molecule indicates that the carbon atoms involved are hybridized as:
36. The presence of a double bond in a molecule indicates that the carbon atoms involved are hybridized as:
37. Which of the following carbon atoms undergoes sp hybridization?
38. Which of the following carbon atoms undergoes sp² hybridization?
39. Which of the following carbon atoms undergoes sp³ hybridization?
40. The bond angle in ethyne (C₂H₂), where carbon is sp hybridized, is approximately:
41. The bond angle in ethene (C₂H₄), where carbon is sp² hybridized, is approximately:
42. The bond angle in methane (CH₄), where carbon is sp³ hybridized, is approximately:
43. A molecule with sp hybridized carbon atoms will have a geometry that is:
44. In ethyne (C₂H₂), each carbon atom is hybridized as:
45. The shape of a molecule with sp² hybridized carbon atoms is typically:
46. In ethene (C₂H₄), each carbon atom is hybridized as:
47. A molecule with sp³ hybridized carbon atoms will have a geometry that is:
48. The hybridization of carbon in methane (CH₄) is:
49. Which type of hybridization is adopted by carbon when it forms four single bonds?
50. What is the characteristic valency of a carbon atom in organic compounds?