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+)` .

[Co(H_(2)O)_(6)]^(3+) complex is

[Co(H_(2)O)_(6)]^(3+) complex is

Amongst [Co(o x)_(3)]^(3-),[CoF_(6)]^(3-) and [Co(NH_(3))_(6)]^(3+) :

For the given set of complexes : (P) [Co(CN)_(6)]^(3-)" and "[Co(H_(2)O)_(6)]^(3+) (Q) [Co(H_(2)O)_(6)]^(3+)" and "[Rh(H_(2)O)_(6)]^(3+) (R ) [Co(H_(2)O)_(6)]^(3+)" and "[CoF_(6)]^(3-) (S) [Co(NH_(3))_(6)]^(3+)" and "[CoF_(6)]^(3-) Select the correct order for Delta_(0) :

Amongst I=[Co(Ox)_(3)]^(3-),II=[CoF_(6)]^(3-),III=[Co(NH_(3))_(6)]^(+3)

The correct order of triangle_(0) for the given complexes, would be : (P) [CoF_(6)]^(3-)" "(Q) [Co(H_(2)O)_(6)]^(3+) (R) [Co(NH_(3))_(6)]^(3+)" "(S) [Rh(NH_(3))_(6)]^(3+)

Amongest [Co(OX)_(3)]^(3-),[CoF_(6)]^(3-),[Co(NH_(3))_(6)]^(3+) and [Co(NH_(3))_(6)]^(2+) the no. of coloured complexes

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 .