The correct option(s) regarding the complex $\left[\mathrm{Co}(\mathrm{en})\left(\mathrm{NH}_3\right)_3\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+}$ (en $\left.=\mathrm{H}_2 \mathrm{NCH}_2 \mathrm{CH}_2 \mathrm{NH}_2\right)$ is (are)
Select ALL correct options:
A
It has two geometrical isomers
B
It will have three geometrical isomers if bidentate ‘en’ is replaced by two cyanide ligands
C
It is paramagnetic
D
It absorbs light at longer wavelength as compared to $\left[\mathrm{Co}(\mathrm{en})\left(\mathrm{NH}_3\right)_4\right]^{3+}$
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