
The magnetic quantum number represents:
(A) Size of the orbital.
(B) Spin angular momentum.
(C) Orbital angular momentum.
(D) Spatial orientation orbital.
Answer
493.2k+ views
Hint: Magnetic quantum number is required to explain the fact that when the source producing the line spectrum is placed in a magnetic field, each spectral line splits up into a number of lines (Zeeman effect).
Complete answer:
When an electron moves around the nucleus, it generates an electric field. This electric field in turn produces a magnetic field which can interact with the external magnetic field. Thus under the influence of the external magnetic field, the electrons of a subshell can orient themselves in certain preferred regions of space around the nucleus called orbitals. The magnetic quantum number determines the number of preferred orientations of the electrons present in a subshell. Since each orientation corresponds to an orbital, therefore, the magnetic quantum number determines the number of orbitals present in any subshell and hence its spatial arrangement.
Hence, option D is correct.
Additional information :
The magnetic quantum number is denoted by the letter or and for a given value of , it can have all the values ranging from including zero , that is , .
Thus, for every value of has values. For example,
(i) For (s-subshell), m can have only one value, that is , . This means that s-subshell has only one orbital called s-orbital.
(ii)For (p-subshell), m can have three values, that is, . In other words, p-subshell has three orientations in space. In other words, a p-subshell has three orbitals.
(iii) For (d-subshell), m can have five values, that is , . This implies that there are five different orientations of d-subshell in space. In other words, d-subshell has five d-orbitals.
(iv) Similarly, when (f-subshell), m can have seven values, that is, This implies that there are seven different orientations of the f-subshell. In other words, f- subshell has seven f-orbitals .
Note: Magnetic quantum number also gives the quantized values of the z - component of the angular momentum of the electron in an orbital according to the expression:
Complete answer:
When an electron moves around the nucleus, it generates an electric field. This electric field in turn produces a magnetic field which can interact with the external magnetic field. Thus under the influence of the external magnetic field, the electrons of a subshell can orient themselves in certain preferred regions of space around the nucleus called orbitals. The magnetic quantum number determines the number of preferred orientations of the electrons present in a subshell. Since each orientation corresponds to an orbital, therefore, the magnetic quantum number determines the number of orbitals present in any subshell and hence its spatial arrangement.
Hence, option D is correct.
Additional information :
The magnetic quantum number is denoted by the letter
Thus, for every value of
(i) For
(ii)For
(iii) For
(iv) Similarly, when
Note: Magnetic quantum number also gives the quantized values of the z - component of the angular momentum
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
A deep narrow valley with steep sides formed as a result class 12 biology CBSE

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Which are the Top 10 Largest Countries of the World?

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Derive an expression for electric potential at point class 12 physics CBSE
