When $KMnO_4$ solution is added to hot oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time. This is because
$Mn^{2+}$ acts as auto catalyst
$CO_2$ is formed
Reaction is exothermic
$MnO_4^-$ catalyses the reaction.
Which of the following is more paramagnetic
Calculate the magnetic moment of a divalent ion in aqueous solution if its atomic number is $25$
Which of the following pair both compounds have no exsistance
The compound which does not show paramagnetism is :-
The correct order of density is