A) \[{{\Delta }_{0}}\]value of [a] is less than that of [b]
B) \[{{\Delta }_{0}}\]value of [a] and [b] are calculated from the energies of violet and yellow light, respectively.
C) Both absorb energies corresponding to their complementary colours.
D) Both are paramagnetic with three unpaired electrons
Correct Answer: B
Solution :
\[{{\Delta }_{0}}\]order will be compared by spectra chemical series I not by energies of violet and yellow light.\[{{\Delta }_{0}}\] order is \[\left[ Cr({{H}_{2}}{{O}_{6}}) \right]C{{l}_{3}}\,\,<\,\left[ Cr{{(N{{H}_{3}})}_{6}} \right]C{{l}_{3}}.\]
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