સંકીર્ણ : $\left[{CoF}_{6}\right]^{3-},\left[{Co}\left({H}_{2} {O}\right)_{6}\right]^{2+},\left[{Co}\left({NH}_{3}\right)_{6}\right]^{3+}$ અને $\left[{Co}({en})_{3}\right]^{3+}$
$\quad\quad\quad\quad\quad\quad A\quad\quad\quad\quad \quad B\quad\quad\quad\quad\quad\quad C\quad\quad\quad\quad\quad\quad D$
યોગ્ય વિકલ્પ પસંદ કરો:
$(ii)$ $CFSE$ $\propto$ strength of ligand
${en}>{NH}_{3}>{H}_{2} {O}>{F}^{-}$
$\therefore$ order of $CFSE$
$III\quad\quad\quad\quad\quad\quad III\quad\quad\quad\quad\quad III\quad\quad\quad\quad\quad\quad II$
$\left.\left[{Co}({en})_{3}\right]^{+3}>[ {Co}\left({NH}_{3}\right)_{6}\right]^{+3}>\left[{CoF}_{6}\right]^{-3}>\left[{Co}\left({H}_{2} {O}\right)_{6}\right]^{+2}$