The $\mathrm{E}^{\circ}$ value for the $\mathrm{Mn}^{3 *} / \mathrm{Mn}^{2+}$ couple is more positive than that of $\mathrm{Cr}^{3+} / \mathrm{Cr}^{2+}$ or $\mathrm{Fe}^{3+} / \mathrm{Fe}^{2 *}$ due to change of
$d^5$ to $d^2$ configuration
$d^4$ to $d^5$ configuration
$d^3$ to $d^5$ configuration
$d^5$ to $d^4$ configuration
Which of the following compounds show colour due to $d-d$ transition?
Which of the following does not contain copper
Write a note on oxides and oxoanions of transition elements.
German silver is an alloy of $Cu$ with
Chloro compound of Vanadium has only spin magnetic moment of $1.73\, BM$. This Vanadium chloride has the formula