Which is not amphoteric
$A{l^{3 + }}$
$C{r^{3 + }}$
$F{e^{3 + }}$
$Z{n^{2 + }}$
The tendency of $ 3d-$ metal ions to form stable complexes is due to their
The spin only magnetic moment of the complex present in Fehling's reagent is $B.M.$(Nearest integer).
Among $\mathrm{VO}_2^{+}, \mathrm{MnO}_4^{-}$and $\mathrm{Cr}_2 \mathrm{O}_7^{2-}$, the spin-only magnetic moment value of the species with least oxidising ability is...................$BM$ (Nearest integer).
(Given atomic member $\mathrm{V}=23, \mathrm{Mn}=25, \mathrm{Cr}=24$ )
Mercury is a liquid at $0\,^o C$ because of
In which of the following metallic bond is strongest