Which of the following is not correct
$Mn_2O_7$ gives $H_2MnO_4$ on reaction with water
on heating $AgNO_3$ gives $Ag_2O$ and $NO_2$
$V_2O_5$ gives $VO_4^{ -1}$ and $VO_4^{+3}$ on reaction with alkalies
All are incorrect
Identify the correct option
Which pair of compound is expected to show similar colour in aqueous medium
The number of unpaired electrons in $M{n^{ + 3}}$ is
Which of the following compounds is metallic and ferromagnetic ?
Which of the following has second ionisation potential less than expected