Which one of the following does not correctly represent the order of the property indicated against it ?
$Ti < V < Cr < Mn -$ increasing melting point
$Ti < V < Mn < Cr -$ Increasing $2^{nd}$ ionisation enthalpy
$Ti < V < Cr < Mn -$ Increasing number of oxidation states
$Ti^{+3} < V^{+3} < Cr^{+3} < Mn^{+3}$ increasing magnetic moment
Ionisation enthalpies of $Ce,\,Pr$ and $Nd$ are higher than $Th,\,Pa$ and $U$. Why ?
German silver is an alloy of $Cu$ with
The melting point of $Zn$ is lower as compared to those of the other elements of $3d$ series because
Which is a stronger reducing agent $Cr ^{2+}$ or $Fe ^{2+}$ and why?
Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $E^o_{M^{3+} /M^{2+}}$ value ?