MCQ
Among the complex ions, $\left[ Co \left( NH _2- CH _2- CH _2- NH _2\right)_2 Cl _2\right]^{+}, \quad\left[ CrCl _2\left( C _2 O _4\right)_2\right]^{3-},\left[ Fe \left( H _2 O \right)_4( OH )_2\right]^{+}$, $\left[ Fe \left( NH _3\right)_2( CN )_4\right]^{-},\left[ Co \left( NH _2- CH _2- CH _2- NH _2\right)_2\left( NH _3\right) Cl \right]^{2+}$ and $\left[ Co \left( NH _3\right)_4\left( H _2 O \right) C1 \right]^{2+}$, the number of complex ion$(s)$ that show$(s)$ cis-trans isomerism is
- A$2$
- B$3$
- C$4$
- ✓$5$
