Which of the following ions has the highest magnetic moment
$T{i^{3 + }}$
$S{c^{3 + }}$
$M{n^{2 + }}$
$Z{n^{2 + }}$
The property exhibited by only transitional elements
Which of the following metal is present in Brass, Bronze and German silver ?
Which of the following metals make the most efficient catalyst
$\operatorname{Zr}\,(\mathrm{Z}=40)$ and $\mathrm{Hf}\,(\mathrm{Z}=72)$ have similar atomic and ionic radii because of :
Cuprous ion is colourless while cupric ion is coloured because