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CBSE Class 12 Chemistry 2019 Delhi Set 2 Solved Paper

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Question : 6 of 10
Marks: +1, -0
Out of [CoF6]3−[\mathrm{CoF}_6]^{3-} and [Co(C2O4)3]3−[\mathrm{Co}(\mathrm{C}_2\mathrm{O}_4)_3]^{3-} which one complex is,
(i) Diamagnetic,
(ii) More stable,
(iii) Outer orbital complex and
(iv) Low spin complex
(Atomic number of Co=27\mathrm{Co}=27 )
Solution:  
(i) [Co(C2O4)3]3−[\mathrm{Co}(\mathrm{C}_2\mathrm{O}_4)_3]^{3-}
(ii) [Co(C2O4)3]3−[\mathrm{Co}(\mathrm{C}_2\mathrm{O}_4)_3]^{3-}
(iii) [CoF6]3−[\mathrm{CoF}_6]^{3-}
(iv) [Co(C2O4)3]3−[\mathrm{Co}(\mathrm{C}_2\mathrm{O}_4)_3]^{3-}
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