MCQ
Which of the following order is not correct
- A$Zn > Cd > Hg$ Heat of atomisation
- B$Mn_2O_7 > MnO_2 > MnO$ Acidic strength
- C$CrO_3 > MoO_3 > WO_3$ oxidising nature
- ✓$HgCl_2 > CdCl_2 > ZnCl_2$ Ionic character
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$[Co(en)_3]\,[Cr(C_2O_4)_3]$
$[Cu(NH_3)_4]\, [CuCl_4]$
$[Ni(en)_3]\,[Co(NO_2)_6]$

Above reaction is an example of $1,4$ -elimination. Predict the product.