Advertisements
Advertisements
प्रश्न
Give the properties of dia/para/ferromagnetic materials.
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 |
APPEARS IN
संबंधित प्रश्न
Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel out each other.
Analysis shows that nickel oxide has the formula Ni0.98O1.00. What fractions of nickel exist as Ni2+ and Ni3+ ions?
Explain why:
(i) Transition elements form coloured compounds.
(ii) Interhalogen compounds are more reactive than their constituent elements.
(iii) Cu+ is diamagnetic but Cu2+ is paramagnetic. (Z = 29)
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)
Give reason for the following :
Sulphur in vapour state shows paramagnetic behaviour.
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.
Among the following ions, which one has the highest paramagnetism?
Which of the following is not paramagnetic?
Give a reason for the following:
Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.
