The colour of the coordination compounds depends on the crystal field splitting . What will be the correct order of absorption of wavelength of light in the visible region for the complexes , `[Co(NH_(3))_(6)]^(3+) , [Co(CN)_(6)]^(3-) , [Co(H_(2)O)_(6)]^(3+)` ?

Options

A. ` [Co ( CN) _ 6]^( 3- ) gt [Co (NH _3 ) _ 6 ]^( 3 + ) gt [Co (H_ 2 O ) _ 6]^( 3 + ) `
B. `[Co (NH ) _ 3 ]^( 3+ ) gt [Co (H _ 2 O ) _ 6 ]^( 3 + ) gt [Co (CN) _ 6 ]^( 3 - ) `
C. `[Co (H _ 2 O ) _ 6]^ (3 + ) gt [Co (NH _ 3) _ 6]^( 3 + ) gt [ Co ( CN) _ 6 ]^( 3- ) `
D. `[Co (CN ) _ 6 ]^( 3- ) gt [Co (NH _ 3 ) _6]^( 3 +) gt [Co (H _ 2 O ) _ 6]^( 3 + ) `

Answer

C