Class 12

22. Coordination compounds question bank (Chemistry)

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Q1.

A complex compound of cobalt has molecular formula containing five NH₃ molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three moles of ion in aqueous solution. On reaction with excess of AgNO₃ solution, two moles of AgCl get precipitated. The Ionic formula of the compound is:

(A)
[Co(NH₃)₄(NO₂)Cl]NH₃Cl
(B)
[Co(NH₃)₅Cl]ClNO₂
(C)
[Co(NH₃)₅(NO₂)]Cl₂
(D)
[Co(NH₃)₅(NO₂)Cl]Cl
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Q2.

Which one of the following shows maximum paramagnetic character?

(A)
[Fe(CN)₆]³â»
(B)
[Fe(CN)₆]⁴⁻
(C)
[Cr(Hâ‚‚O)₆]³âº
(D)
[Cu(Hâ‚‚O)₆]²âº
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