Zeeman and stark effect can be explained by ________ quantum number.
Magnetic
Magnetic Quantum Number(m):
The explanation for the splitting of a single spectral line of hydrogen atom into a number of closely spaced lines in the presence of a magnetic field or an electric field was given by Landĕ. He postulated that in the presence of an external electric field or a magnetic field an electron can have a different spatial orientation off for a particular angular momentum. The magnetic quantum number was introduced to specify the further subdivision of subshells or energy levels. It describes the spatial orientation of the orbital.
Zeeman Effect: Splitting of a spectral line in presence of a magnetic field.
Stark effect: Splitting of spectral lines in the presence of the electric field.
Conclusion Statement: Option (c) is the correct answer.