Which one of the following complexes will most likely absorb visible light ?
(At nos. Sc = 21, Ti = 22, V = 23, Zn = 30)
Text Solution
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The electronic configuration of central metal ions in the given complexes is,
The central metal ion present in the complex 
has its valence electrons in the 4 s orbital that can easily excite to the 3d orbital and can absorb visible light, but in case of other complexes, the central metal ion has fully filled electronic configuration. Thus, the complex 
is most likely to absorb visible light among the given complexes.
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