Question

Magnetic dipole moment associated with an electron due to its orbital motion in first orbit of H-atom is known as ________ .

Answer 1

Explanation:

In Bohr’s model of the hydrogen atom, the electron moves in a circular orbit around the proton. The electron passes by a particular point on the loop in a certain time, so we can calculate a current I=Q\text{/}t. An electron that orbits a proton in a hydrogen atom is therefore analogous to current flowing through a circular wire . In the study of magnetism, we saw that a current-carrying wire produces magnetic fields. It is therefore reasonable to conclude that the hydrogen atom produces a magnetic field and interacts with other magnetic fields.

Answer 2

The magnetic dipole moment associated with the electron in the 1st orbit of the H-atom is called Bohr magneton (μ$_B$).

• Bohr magneton is the minimum magnetic dipole moment associated with an electron caused by its orbital motion in the 1st orbit of the atom.
• It can be expressed as μ$_B$ = eh/4πm where, e is the charge of the electron, m is the mass of the electron and h is Planck's constant.
• The value of Bohr magneton is  $9.27 X 10^{-24} J/T$.

Hence, we can conclude Bohr Magneton is the magnetic dipole moment associated with the electron in the 1st orbit of the H-atom.

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