Advertisements
Advertisements
प्रश्न
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)
उत्तर
Co (Z=27)=1s2 2s2 2p6 3s2 3p6 4s2 3d7
Co+3 =1s2 2s2 2p6 3s2 3p6 3d7
F- is weak field ligand:
[CoF6]3-
(i) [CoF6]3- is paramagnetic due to the presence of four unpaired electrons
(ii) [Co(en)3]3+ is more stable due to chelation
(iii) [Co(en)3]3+ forms inner orbital complex (d2sp3)
(iv) [CoF6]3+ Forms high spin complex (sp3d2)
APPEARS IN
संबंधित प्रश्न
Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel out each other.
Write the type of magnetism observed when the magnetic moments are aligned in parallel and anti-parallel directions in unequal numbers.
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)
Give reason for the following :
Sulphur in vapour state shows paramagnetic behaviour.
Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: The electrons change their spin on heating.
Fe3O4 (magnetite) is an example of ___________.
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
Which of the following statements are correct?
(i) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.
(ii) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic.
(iii) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other.
(iv) In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Which of the following is not a ferroelectric compound?
The susceptibility of a paramagnetic material is 99. The permeability of the material in Wb/A-m is ______.
[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]
