Question:
Three complexes,
$\left[\mathrm{CoCl}\left(\mathrm{NH}_{3}\right)_{5}\right]^{2+}(\mathrm{I})$,
$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{H}_{2} \mathrm{O}\right]^{3+}$ (II) and
$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$ (III)
absorb light in the visible region. The correct order of the wavelength of light absorbed by them is :
Correct Option: , 2
Solution:
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