MCQ
Which of the following is not correct about transition metals
- ATheir melting and boiling points are high
- BTheir compounds are generally coloured
- CThey can form ionic or covalent compounds
- ✓They do not exhibit variable valency
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$(i)$ Ionization $(ii)$ Hydrate $(iii)$ Coordination $(iv)$ Geometrical $(v)$ Optical
Which of the above isomerisms are exhibited by $[Cr(NH_3)_2 (OH)_2 Cl_2]^-$?