The magnetic quantum number (m) of a free gaseous atom is associated with:
Correct answer: B. Spatial orientation of an orbital.
- A. Effective volume of an orbital.
- B. Spatial orientation of an orbital.
- C. One-dimensional orientation of an orbital.
- D. Number of electrons in an orbital.
Explanation
In quantum mechanics, the magnetic quantum number (m) specifies the orientation or magnetic component of an atomic orbital within a given energy level. It determines the number of orbitals in a subshell and the spatial orientation of these orbitals. The value of (m) can range from -l to +l, including zero (where 'l' is azimuthal quantum number). It represents the different possible orientations of an orbital in space. For example, for an s orbital (l = 0), the magnetic quantum number (m) is always zero. For p orbital (l = 1), (m) can take the values -1, 0 or +1, representing the three different orientations along the x, y, and z axes. In summary, the magnetic quantum number (m) of a free gaseous atom is associated with the spatial orientation or magnetic component of atomic orbitals.
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