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Which of the following is more stable co...

Which of the following is more stable complex and why ?
`[Co^(2+)(NH_(3))_(6)]^(3+) and [Co(en)_(3)]^(3+)`

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`[Co(en)_(3)]^(3+)` as (en) is a chelating bidentate ligand.
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Which of the following complexes is more stable and why ? [Co(en)_3]^(3+) and [Co(NH_3)_6]^(3+)

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Which of the following statement is true for the complex [Co(NH_(3))_(4)Br_(2)]NO_(2) ?

Which of the following is more stable ? (1) K_(4)[Fe(CN)_(6)] or K_(3)[Fe(CN)_(6)] (2) [Co(NH_(3))_(6)]^(3+) or [Co(en)_(2)(NH_(3))_(2)]^(3+) (3) [NiCl_(4)]^(2-) or [Ni(CN)_(4)]^(2-)

Which of the following is more stable ? (1) K_(4)[Fe(CN)_(6)] or K_(3)[Fe(CN)_(6)] (2) [Co(NH_(3))_(6)]^(3+) or [Co(en)_(2)(NH_(3))_(2)]^(3+) (3) [NiCl_(4)]^(2-) or [Ni(CN)_(4)]^(2-)

On the basic of CET explaine the following complex of Co^(3+) like [Co(NH_(3))_(6)]^(3+),[Co(en)_(3)]^(3+) and [Co(NO_(2))_(6)]^(3-) are diamagntic while [CoF_(6)]^(3-) and [Co(H_(2)O)_(6)]^(3+) are paramagnetic .

Which of the following can exhibit geometrical isomerism ? [Co(NH_(3))_(4)Cl_(2))] [Co(en)_(3)]Cl_(2) [Co(en)_(2)(NO_(2))aCl]SCN [Co(NH_(3)_(6)][Cr(CN)_(6)]

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+) .

What type of isomerism exists in the following pairs of complexes ? (i) [Co(NH_(3))_(5)NO_(3)]SO_(4) and [Co(NH_(3))_(5) SO_(4) ] NO_(3) (ii) [Co(en)(H_(2)O)_(2) Cl_(2)] Cl and [Co(en) (H_(2)O) Cl_(3) ] H_(2)O

Which of the following will show optical isomers? (I) cis- [Co(NH_(3))_(2)(en)_(2)]^(3+) (II) trans- [IrCl_(2)(C_(2)O_(4))_(2)]^(3-) (III) [Rh(en)_(3)]^(3+) (IV) cis- [IR(H_(2)O)_(3)Cl_(3)]

ICSE-SAMPLE QUESTION PAPER 3-QUESTION
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  11. Out of Cr^(3+) and Mn^(3+) , which is a stronger oxidising agent and ...

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