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

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-)

Write IUPAC name of the following complex : [Co(NH_(3))_(6)]^(3+)

The shape of [Co(NH_(3))_(6)]^(3+) is

Which of the following complexes is more stable and why ? [Co(en)_3]^(3+) and [Co(NH_3)_6]^(3+)

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+) .

Which of the following isomerism is/are not shown by the complex [Co(Cl_(2)(OH)_(2)(NH_(3))_(2)]Br?

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)]

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)]