1.

Identify the correct order of wavelength of light absorbed for the following complex ions. underset(I)([Co(H_2O)_6]^(3+)) , underset(II)(Co(CN)_6]^(3-) underset(III)([Co(l)_6]^(3-)) ,underset(IV)([Co(en)_3])

Answer»

IIIgtIgtIVgtII
IIgtIVgtIgtIII
IIIgtIgtIIgtIV
IgtIIIgtIVgtII

Solution :`Delta` corresponds to the wave LENGTH of the visible light and `Delta=(hc)/lambda`
The order of ability to produce d-orbital splitting of various lignads:
`COgtCN^(-)gtNO_2^(-) GT en gt NH_3 gt H_2O gt OH^(-) gt F^(-) gt CL^(-) gt Br^(-) gt I^(-)`
`{:("STRONG field","WEAK field"),("ligands","ligands"),(("larger" Delta),("smaller" Delta))`


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