Coordination Compounds_JEE-Main-2019_090119_S1 - Competishun – Live JEE & NEET Courses and Exam Prep

JEE Main 2019

9-01-2019 S1

Question

Two complexes $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3(\mathrm{~A})$ and $\left[\mathrm{Cr}\left(\mathrm{NH}_3\right)_6\right]_3(\mathrm{~B})$ are violet and yellow coloured, respectively. The incorrect statement regarding them is

Select the correct option:

$\Delta_0$ values of $(A)$ and $(B)$ are calculated from the energies of violet and yellow light, respectively

Both are paramagnetic with three unpaired electrons

$\Delta_0$ value for (A) is less than that of (B)

Both absorb energies corresponding to their complementary colors

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution