The catalyst used in the hydrogenation of oils is
$Fe$
$Ni$
$Pt$
$V_2O_5$
Which forms coloured salts
Transition elements are more metallic than representative elements ($s$ and $p-$ block elements) due to
Discuss the magnetic properties of transition elements.
Calculate the number of unpaired electrons in the following gaseous ions: $Mn ^{3+}, Cr ^{3+}, V ^{3+}$ and $T i^{3+} .$ Which one of these is the most stable in aqueous solution?
The colorless species is