The compound CoCl2NH32(en) can form

The compound [CoCl2​(NH3​)2​(en)] has two geometrical isomers. One is the cis-isomer (with respect to NH3​) and the other is the trans- isomer (with respect to NH3).The cis-isomer has two optically active forms, d−cis isomer and l−cis isomer. So, the compound [CoCl2​(NH3​)2​(en)] can form geometrical isomers as well as optical isomers.