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A compound of metal ion M^(x+) (z=25) ha...

A compound of metal ion `M^(x+) (z=25)` has spin only magnetic moment of `sqrt(15)B.M.` The positive O.S. of the metal is

A

2

B

3

C

4

D

5

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The correct Answer is:
C
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The transition metals and their compounds have paramagnetic properties. This is due to the reason that ions of transition metals have unpaired electrons in (n-1)d orbitals. As the number of unpaired Sc to Mn, the paramagnetic character increases accodingly. From Mn onwards, this character decreases as electrons get paired up. The paramagnetic behaviour is expressed in terms of magnetic moment which is because of the spin of unpaired electron (n). It is given as Magnetic moment = sqrt(n(n+2))B.M Majority of transition metal compounds are coloured both in solid state as well as in aqueous solution. due to d-d transition in which unpaired electrons from the lower energy d-orbitals are transferred to higher energy d-orbitals. The energy of this transition correspond to the radiation in visibe region. Thus, when white light falls on such a transition metal compound, some light energy corresponding to a particular colour is absorbed and one or more electrons are raised from lower energy set of orbitals to those of higher energy. With the absorption of radiations corresponding to specific colour from the white light, a colour known asd the complementary colour is observed or transmitted. A compound of metal ion M^(x+) (z = 24) has a spin only magnetic moment of sqrt(15)B.M. The number of unpaired electrons in the metal ion of the compound are

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A comapound in which a metal ion M^(x+)(Z=25) has a spin only magnetic moment of sqrt24 BM The number of unpaired electrons in the compound and the oxidation state of the metal ion respectively are

A compound in which a metal ion \(M^{x+}\)(Z=25) has a spin only magnetic moment of \(\sqrt{24}\)BM.The number of unpaired electrons in the compound and the oxidation state of the metal ion are respectively.

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The species with spin only magnetic moment of sqrt(24) BM is:

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NARAYNA-D BLOCK & TRANSITION ELEMENTS-Level-I (H.W)
  1. the catalyst used in the hydrogenation of oils is :

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  2. The catalyst used in the polymerisation of ethylene is

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  3. Which of the following is not responsible for the catalytical activity...

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  4. Which of the following pair of transition metal ions, have the same ca...

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  5. The following species is repelled by a magnetic field

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  6. The following is not a ferromagnetic

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  7. In the calcultion of magnetic moment. The orbital magnetic moment cont...

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  8. A compound of metal ion M^(x+) (z=25) has spin only magnetic moment o...

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  9. The magnetic moment of two ions M^(x+) and M^(y+) of the element M(Z=2...

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  10. The magnetic moment of ion is close to 36 xx 10^(-24) "joule"//"Tesla"...

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  11. Which is not an interstitial compound?

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  12. The metal that forms interstitial nitride is

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  13. The common metal present in german silver, bell metal and brass is

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  14. Which of the following is an alloy of a metal and a non-metal

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  15. The alloy that is used for making permanent

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  16. The susbtance that sublimes on heting is

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  17. The least stable oxide at room temperature is

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  18. Which of the following metal oxides is white in colour but becomes yel...

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  19. Oxide of metal cation which is not amphoteric ?

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  20. Which of the following oxides of chromium is amphoteric in nature?

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