Chemistry - Coordination Chemistry Question with Solution | TestHub

${\left({∆}_0\right)}_A<{\left({∆}_0\right)}_B$ , both complex have $CN=6,$ B has strong field ligand and A has weak field ligand

so ${\left({∆}_0\right)}_A<{\left({∆}_0\right)}_B$

In both complexes, $Cr$ has $3$ unpaired electrons and hence, will be paramagnetic $\left[Cr\left(H_{2}O\right)\right]C{l}_3$

$\left[{\mathrm{Cr}}^{+3}=1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}3{\mathrm{d}}^3\right]$ in strong field ligand or weak field ligand is $t_{2g}^{1,1,1},e{g}^o$



${\mathrm{\Delta }}_0$ order will be compared by spectrochemical series not by energies of violet and yellow light. Hence incorrect