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Define Spin of Electron.


A. Rotation of electrons about its own axis.

B. Clockwise and anti-clockwise rotation of electron.

C. A quantum number which depends upon direction and speed of rotation of electrons.

D. An intrinsic characteristic of an electron connected with its magnetic field.

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Last updated date: 20th Jun 2024
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Answer
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Hint: The spin of an electron is a quantum property that is related to its magnetic properties.

Complete step by step answer:

The spin of an electron is an intrinsic characteristic of the electron that is related to its magnetic properties. It is not related to the physical rotation of the electron about its own axis, nor is it related to the clockwise or anti-clockwise rotation of the electron. Instead, the spin of an electron is a quantum property that describes the intrinsic angular momentum of the electron. It is a quantum number that depends upon the direction and speed of rotation of the electron, and it is connected with the magnetic field of the electron. It is often represented by the symbol "s". The spin of an electron can take on two values: $+\dfrac{1}{2}$ or $-\dfrac{1}{2}$. The spin of an electron is important in understanding the behavior of electrons in magnetic fields and is also a fundamental property used in the study of quantum mechanics.

Points to remember:

  • The spin of an electron is a fundamental property of the electron.

  • It is related to the magnetic properties of the electron.

  • It is a quantum property that is described by a quantum number.

  • It is not related to the physical rotation of the electron about its own axis.

  • The spin of an electron is an important property in quantum mechanics and is used to explain many physical phenomena.


Hence, the correct option is D.


Note: The spin of an electron is not a classical rotation like a spinning object. It is a distinct property that cannot be visualized in a classical sense. Spin is associated with the magnetic properties of electrons and plays a crucial role in determining the electron's behavior in magnetic fields and its interaction with other particles. The spin of an electron is quantized, meaning it can only have specific values and is described by the quantum number(s) associated with it.