Question

Two complexes $[Cr(H_2O_6)Cl_3] \; (A)$ and $[Cr(NH_3)_6]Cl_3 \; (B)$ are violet and yellow coloured, respectively. The incorrect statement regarding them is :

• 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. Bothe absorb energies corresponding to their complementary colors.
• D. Bothe are paramagnetic with three unpaired electrons.

Answer 1

Answer: (B)

$\Delta_0$ order will be compared by spectro chemical series not by energies of violet & yellow light so $\Delta_0$ order is
$[Cr(H_2O)_6]Cl_3 < [Cr(NH_3)_6]Cl_3$