Magnetic Properties | d Block elements| Lecture 11 | Line to Line NCERT | Gagan Sir
Автор: Dikki Institute
Загружено: 2022-07-26
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Magnetic properties
When a magnetic field is applied to a substance, two types of a magnetic behaviour are observed.
Diamagnetic: These substances are repelled by applied magnetic fields.
Paramagnetic : These substances are attracted by applied magnetic fields.
Ferromagnetic: The sentences which are attracted very strongly.
Note: Ferromagnetism is an extreme form of paramagnetism.
Paramagnetism is a property due to the presence of unpaired electrons.
Transition metals ions contain unpaired electrons in (n-1)d orbital, so most of the metals ions and their compounds are paramagnetic.
As the number of unpaired electrons increases from 1 to 5, the magnetic movement and paramagnetic character also increases.
Those transition elements which have paired electrons are called diamagnetic.
Magnetic moment:
It is due to orbital motion and spin motion it is represented by u =root n(n+2) where is the Magnetic Moment, n is the number of unpaired electrons.
Unit of magnetic movement is Bohr magnetons (BM).
Magnetic moment increases with the increasing number of unpaired electrons.
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