The splitting of spectral lines by a magnetic field is called the zeeman effect after the Dutch physicist Pieter Zeeman. The Zeeman effect is a vivid confirmation of of space quantization. Magnetic quantum number 'm' was introduced during the study of zeeman effect. 'm' can have the (2l+1) values (-l,0,+l). Magnetic quantum number represents the orientation of atomic orbitals in three-dimensional space. the normal zeeman effect consists of the splitting of a spectral line of frequency `v_(0)` into three components i.e.,
`v_(1)=v_(0)-(e)/(4pim)B,v_(2)=v_(0),V_(3)=v_(0)+(e)/(4pim)B`
Here, B is magnetic field.
Q. In presence of magnetic field, d-suborbit is:

Options

A. five-fold degenerate
B. three-fold degenerate
C. seven-fold degenerate
D. non-degenerate

Answer

D