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Coordination Compounds

Question
CBSEENCH12011460
Wired Faculty App

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :

Column I Column II
a. Co3+ i. 8 BM
b. Cr3+ ii. 35 BM
c. Fe3+ iii. 3 BM
d. Ni2+ iv. 24 BM
    v. 15 BM

  • a b c d
    iv v ii i
  • a b c d
    i ii iii iv
  • a b c d
    iii v i ii
  • a b c d
    iv i ii iii

Solution

A.

a b c d
iv v ii i

Co3+ = [Ar] 3d6, Unpaired e–(n) = 4
Spin magnetic moment 4(4+2) = 24 BM

Cr3+ = [Ar] 3d3, Unpaired e–(n) = 3
Spin magnetic moment = 3(3+2) = 15 BM

Fe3+ = [Ar] 3d5, Unpaired e–(n) = 5
Spin magnetic moment =5(5+2) = 35 BM

Ni2+ = [Ar] 3d8, Unpaired e–(n) = 2
Spin magnetic moment = 2(2+2) = 8 BM 

Some More Questions From Coordination Compounds Chapter

Write the formula for the following coordination compound:
Tetraaminediaquacobalt(lll)chloride

Write the formula for the following coordination compound:
Potassium tetracyanidonickelate(II)

Write the formula for the following coordination compound:
Tris(ethane -1, 2-diamine) chromium(III) chloride

Write the formula for the following coordination compound:
Amminebromidochloridonitrito-N-platinate (II)

Write the formula for the following coordination compound:
Dichloridobis(ethane-1, 2-diamine)platinum(lV) nitrate.

Write the formula for the following coordination compound:
Iron(III) hexacyanidoferrate(II)

Write the IUPAC names of the following coordination compounds:
(i) [Co(NH3)6]Cl3
(ii) [Co(NH3)5Cl]Cl2
(iii) K3[Fe(CN)6]
(iv) K3[Fe(C2O4)3]
(v) K2[PdCl4]
(vi) [Pt(NH3)2Cl(NH2CH3)]Cl.

Indicate the type of isomerism exhibited by the following complexes and draw structures for these isomers:
(i)    K[Cr(H2O)2(C2O4)2],                      (ii) [Co(en)3Cl3,
(iii) [Co(NH3)5(NO2)]|NO3]2,                 (iv) [Pt(NH3)(H2O)Cl2]

Explain on the basis of valence bond theory that [Ni(CN)4]2–  ion with square planar is diamagnetic and the [NiCl4]2– ion with tetrahedral geometry is paramagnetic.

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