Question: 55. Match List I with List II.
| List I (Quantum Number) | List II (Information provided) |
|---|---|
| A. m_{\ell} | I. shape of orbital |
| B. m_{s} | II. size of orbital |
| C. \ell | III. orientation of orbital |
| D. n | IV. orientation of spin of electron |
Choose the correct answer from the options given below:
(1) A-I, B-III, C-II, D-IV
(2) A-III, B-IV, C-I, D-II
(3) A-III, B-IV, C-II, D-I
(4) A-II, B-I, C-IV, D-III
Answer: Option (2)
Explanation:
The magnetic quantum number m_{\ell} gives information about the orientation of an orbital in space.
Hence, A matches with III.
The spin quantum number m_{s} gives information about the orientation of the spin of the electron.
Hence, B matches with IV.
The azimuthal quantum number \ell determines the shape of the orbital.
Hence, C matches with I.
The principal quantum number n determines the size of the orbital.
Hence, D matches with II.
Therefore, the correct matching is A-III, B-IV, C-I, D-II,
which corresponds to option (2).