\(\left[ Co ( ox )_{2} Br \left( NH _{3}\right)\right]^{2 -}\) i.e. \(\simeq\left[ M ( AA )_{2} ab \right]^{2-}\)
\(\rightarrow\) cis is optically active isomers and trans is optically inactive isomer
\(\rightarrow\) Hence total isomers is \(=3\)
સંકીર્ણ $-$ અયુગ્મિત ઇલેક્ટ્રોનની સંખ્યા