Atomic orbitals quantum numbers and shapes of s p d orbitals - One Line Questions

1. How many nodal surfaces does a 2s orbital have? — 1
2. How many unpaired electrons are present in a nitrogen atom's ground state configuration (considering only valence orbitals)? — 3
3. For l = 1, what are the possible values for the magnetic quantum number (ml)? — -1, 0, +1
4. How many nodal planes are present in a p orbital? — 1
5. What is the number of radial nodes in a 3s orbital? — 2
6. The formula for the number of radial nodes in an orbital is (n - l - 1). For a 2p orbital, how many radial nodes are there? — 0
7. How many angular nodes does a d orbital have? — 2
8. If n = 2, what are the possible values for 'l'? — 0, 1
9. For n=3, what are the possible values of 'l'? — 0, 1, 2
10. For a given principal quantum number 'n', what are the possible values of the azimuthal quantum number 'l'? — 0, 1, 2, ..., n-1
11. A 3d orbital has l = 2. How many possible values of ml are there? — 5
12. For an orbital with n=4 and l=1, what is the total number of nodes? — 3
13. How many orientations are possible for a p orbital in space? — 3
14. How many d orbitals are there in a d subshell? — 5
15. How many electrons can a single orbital hold according to the Pauli Exclusion Principle? — 2
16. What is the total number of nodes in a 3p orbital? — 2
17. How many electrons can be placed in the 3d subshell? — 10
18. What is the maximum number of electrons that can be accommodated in the n=2 energy level? — 8
19. Which of the following orbitals has the highest energy in a multi-electron atom? — 3p
20. What is the total number of orbitals in the n=3 energy level? — 9
21. The number of orbitals in a subshell is given by 2l + 1. For a d subshell (l=2), how many orbitals are there? — 5
22. The set of quantum numbers (n, l, ml, ms) uniquely defines: — An atomic orbital
23. What is the shape of an s orbital? — Spherical
24. The shape of the dz^2 orbital is best described as: — Two cones along the z-axis
25. Which d orbital has lobes lying between the x and y axes in the xy plane? — dxy
26. The five d orbitals have different spatial orientations. Which d orbital is oriented along the z-axis and also has lobes in the xy plane? — dz^2
27. For multi-electron atoms, the energy of an electron depends on both 'n' and 'l'. Which statement is generally true? — Energy increases with 'l' for a given 'n'
28. Which quantum number is not derived from the solution of the Schrödinger equation for the hydrogen atom? — ms
29. Which quantum number dictates the number of subshells within a principal energy level? — n
30. The number of angular nodes in an orbital is equal to the value of: — l
31. Which quantum number is related to the energy of the electron in a hydrogen atom? — n
32. Which of the following sets of quantum numbers is NOT allowed for an electron in an atom? — n=3, l=2, ml=3, ms=+1/2
33. The quantum numbers for the 2p_z orbital are: — n=2, l=1, ml=0, ms=±1/2
34. What is the term used for the region of space around the nucleus where the probability of finding an electron is maximum? — Orbital
35. An orbital with l = 0 is designated as: — s orbital
36. An orbital with l = 2 is designated as: — d orbital
37. Which quantum number describes the shape of an atomic orbital? — Azimuthal or angular momentum quantum number (l)
38. An orbital with l = 1 is designated as: — p orbital
39. The subshells present in the n=3 energy level are: — s, p, d
40. The shape of a 3s orbital compared to a 2s orbital is: — Larger and more diffuse
41. The shape of a 4f orbital is: — Complex and multi-lobed
42. What is the shape of a p orbital? — Dumbbell
43. The shape of the d orbitals is generally described as: — Double dumbbell
44. What does the spin quantum number (ms) represent? — The intrinsic angular momentum of an electron
45. The magnetic quantum number (ml) determines: — The spatial orientation of the orbital
46. The azimuthal quantum number 'l' determines the number of angular nodes and also: — The shape of the orbital
47. The probability density function |ψ|^2 represents: — The probability of finding an electron in a unit volume at a given point
48. A node in an atomic orbital is a region where: — The probability of finding an electron is zero
49. What is the principal quantum number (n) primarily related to? — The size or energy level of the electron shell
50. The three p orbitals (px, py, pz) are oriented along which axes? — x, y, z axes
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