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Q.
The number of geometrical isomers possible in triamminetrinitrocobalt (III) is $X$ and in trioxalatochromate (III) is $Y$. Then the value of $X+Y$ is______.
Triamminetrinitrocobalt(III) $\rightarrow\left[ Co \left( NO _{2}\right)_{3}\left( NH _{3}\right)_{3}\right]$
trioxalatochromate(III) ion $\rightarrow\left[ Cr \left( C _{2} O _{4}\right)_{3}\right]^{3-}$
$X+Y=2+0=2.0$