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Magnetic moment of 5.92 B.M. is given by...

Magnetic moment of 5.92 B.M. is given by which of the following
ion ?

A

`Ti^(3+)`

B

`Ni^(2+)`

C

`Co^(2+)`

D

`Mn^(2+)`.

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If hydrogen atoms (in the ground state ) are passed through an homogeneous magnetic field, the beam is split into two parts. This interaction with the magnetic field shows that the atoms must have magnetic moment. However, the moment cannot be due to the orbital angular momentum since l=0. Hence one must assume existence of intrinsic angular momentum, which as the experiment shows, has only two permitted orientations. Spin of the electron produce angular momentum equal to S=sqrt(s(s+1))(h)/(2pi) where S=+(1)/(2) . Total spin of an atom = +(n)/(2) " or "-(n)/(2) where n is the number of unpaired electrons. The substance which contain species with unpaired electrons in their orbitals behave as paramagnetic substances. The paramagnetism is expressed in terms of magnetic moment. The magnetic moment of an atom mu_(s)sqrt(s(s+1))(eh)/(2pimc)=sqrt((n)/(2)((n)/(2)+1))(eh)/(2pimc)" "s=(n)/(2) impliesmu_(s)=sqrt(n(n+1)) B.M. 1. B.M. (Bohr magneton)= (eh)/(4pimc) If magnetic moment is zero the substance is diamagnetic. Which of the following ion has lowest magnetic moment?

MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. The reaction of acidified KMnO4 with H2O2 gives .

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  2. The pair of compounds that cannot exist together is :

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  3. Magnetic moment of 5.92 B.M. is given by which of the following ion ...

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  4. Gadolinium belong to 4 f series (Z=64). Which of the following is its ...

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  5. Because of lanthanoid contraction, which of the following pairs of ele...

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  6. Which one of the following statement is correct when SO2 is passed thr...

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  7. The outer shell electronic configuration of Gd (Z = 64) is

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  8. Draw lewis dot structure of PH3

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  9. The correct order of ionic radii of Y^(3+), La^(3+), Eu^(3+) and Lu^(3...

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  10. Write ionic equation showing KMnO4 acting as an oxidising agent in aci...

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  11. Which of the following pairs of transition metal ion s are the stronge...

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  12. What is the maximum oxidation state shown by Manganese in its compound...

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  13. Write the coordination number of central atom in the following coordin...

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  14. The acidic, basic or amphoteric nature of Mn2O7, V2O5 and CrO are resp...

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  15. Among the following series of transition metal ions the one where all ...

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  16. Answer the following: Aqueous solution of Ti^(4+) is colourless, but a...

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  17. The oxidation state of chromium in the final product formed by the rea...

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  18. The spin only magnetic moment (in units of Bohr magneton) of Ni^(2+)...

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  19. What is the coordinate number of the central metal ions in the followi...

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  20. Draw lewis dot structure of SiCl4

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