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The magnetic moment of complex given bel...

The magnetic moment of complex given below are in the order:
(I) `[Ni(CO)_(4)]`
(II) `[Mn(CN)_(6)]^(4-)`
(III) `[Cr(NH_(3))_(6)]^(3+)`
(IV) `[CoF_(6)]^(3-)`

A

I gtII gtIII gtIV

B

I ltII ltIII ltIV

C

IV gt II gtI gtIII

D

IV lt II ltI ltIII

Text Solution

Verified by Experts

The correct Answer is:
b
Use Pauling VB theory .
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Which of the followimg complex compound(s) is/are paramagnetic and low spin? (I) K_(3)[Fe(CN_(6))] (II) [Ni(CO)_(4)]^(0) (III) [Cr(NH_(3))_(6)]^(3+) (IV) [Mn(CN)_(6)]^(4-)

The magnetic moments of complexes given below are in the order: [Atomic no. Ti = 22 , Cr = 24 , Fe = 26 , Ni = 28 ] [FeF_(6)]^(3-) [Ti(H_(2)O)_(6)]^(3+) [Cr(NH_(3))_(6)]^(3+) [Ni(H_(2)O)_(6)]^(2+)

Find the total number of complexes / species which are paramagnetic. (a) [Co(NH_(3))_(6)]^(3+)," "(b) [Co(H_(2)O)_(6)]^(3+), (c ) [Cr(NH_(3))_(6)]^(2+)," "(d) [CoF_(6)]^(3-), (e ) K_(3)[PtCl_(3)(C_(2)H_(4))]," "(f) [Mn(NH_(3))_(6)]^(2+), (g) [Fe(NH_(3))_(6)]^(2+)," "(h) NO_(2), (i) ClO_(2)," "(j) [Pt(NH_(3))_(2)Cl_(2)

Which complex of the following pairs has the larger value of Delta_(0) (i) [Co(CN)_(6)]^(3-) and [Co(NH_(3))_(6)]^(3+) (ii) [Co(NH_(3))_(6)]^(3+) and [CoF_(6)]^(3-) (iii) [Co(H_(2)O)_(6)]^(2+) and [Co(H_(2)O)_(6)]^(3+) .

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