MCQ
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- ANucleophilic addition
- BNucleophilic substitution
- CElectrophilic addition
- ✓Free radical substitution
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| List $I$ (Coordination entity) | List $II$ (Wavelength of light absorbed in $nm$) |
| $A$ ${\left[ CoCl \left( NH _3\right)_5\right]^{2+}}$ | $I$ $310$ |
| $B$ ${\left[ Co \left( NH _3\right)_6\right]^{3+}}$ | $II$ $475$ |
| $C$ ${\left[ Co ( CN )_6\right]^{3-}}$ | $III$ $535$ |
| $D$ ${\left[ Cu \left( H _2 O \right)_4\right]^{2+}}$ | $IV$ $600$ |
Choose the correct answer from the options given below
$(1)$ Ligands are connected to the central metal ions by covalent bonds.
$(2)$ Secondary valencies have directional properties
$(3)$ Secondary valencies are non-ionisable Of these statements