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प्रश्न
Give the properties of dia/para/ferromagnetic materials.
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उत्तर
| Properties | Dia | Para | Ferro |
| Magnetic susceptibility | Negative | Positive and small | Positive and large |
| Relative permeability | Slightly less than unity | Greater than unity | Large |
| Nature of magnetic field lines | Repelled or expelled from diamagnetic materials | Attracted into the paramagnetic materials | Strongly attracted to the ferromagnetic materials |
| Susceptibility | Temperature independent. | Inversely proportional to temperature. | Inversely proportional to temperature. |
| Examples | Bismuth, copper, and water, etc. | Aluminum, platinum, chromium, etc. | Iron, Nickel, and Cobalt |
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संबंधित प्रश्न
Explain the following with suitable examples:
Paramagnetism
Out of [CoF6]3- and [Co(en)3]3+, which one complex is
(i) paramagnetic
(ii) more stable
(iii) inner orbital complex and
(iv) high spin complex
(Atomic no. of Co = 27)
The BH curve for a ferromagnetic material is shown in the figure. The material is placed inside a long solenoid which contains 1000 turns/cm. The current that should be passed in the solenonid to demagnetize the ferromagnet completely is
Compare dia, para and ferromagnetism.
What happens to the domains in a ferromagnetic material in the presence of external magnetic field?
When heated to high temperature, ferromagnetic substance changes to ____________.
The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains:
(i) get oriented in the direction of the applied magnetic field.
(ii) get oriented opposite to the direction of the applied magnetic field.
(iii) are oppositely oriented with respect to each other without the application of magnetic field.
(iv) cancel out each other’s magnetic moment.
Which one of the following homo-diatomic molecule is paramagnetic?
Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion: Magnetic moment values of actinides are lesser than the theoretically predicted values.
Reason: Actinide elements are strongly paramagnetic.
Select the most appropriate answer from the options given below:
The correct order of bond strength is ______.
