Solveeit Logo
Login

Question

Chemistry Question on properties of d block elements

In which one of the following, d-d transition involves absorption in the ultraviolet region

A

[Cu(H2O)4]2+[Cu(H_2O)_4]^{2+}

B

[Ti(H2O)6]3+[Ti(H_2O)_6]^{3+}

C

[Co(NH3)6]3+[Co(NH_3)_6]^{3+}

D

[Co(CN)6]3−[Co(CN)_6]^{3-}

Answer

[Co(CN)6]3−[Co(CN)_6]^{3-}

Explanation

Solution

The wavelength of light absorbed by [Co(CN)6]3−\left[ Co ( CN )_{6}\right]^{3-} is 310 nm310\, nm which corresponds to the UV region and not in the visible region.