1.

Correct increasing order for the wavelengths of absorption in the visible regionfor the complexes of Co^(3+) is -

Answer»

`[CO(en)_(3)]^(3+), [Co(NH_(3))_(6)]^(3+) , [Co(H_(2)O)_(6)]^(3+)`
`[Co(H_(2)O)_(6)]^(3+) , [Co(en)_(3)]^(3+), [Co(NH_(3))_(6)]^(3+)`
`[Co(H_(2)O)_(6)]^(3+) , [Co(NH_(3))_(6)]^(3+) , [Co(en)_(3)]^(3+)`
`[Co(NH_(3))_(6)]^(3+) , [Co(en)_(3)]^(3+) , [Co(H_(2)O)_(6)]^(3+)`

ANSWER :A


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