Which of the following pair of elements cannot form an alloy
$Zn - Cu$
$Fe - Hg$
$Fe,\,C$
$Na,\,Hg$
Although $Cr^{3+}$ and $Co^{2+}$ ions have same number of unpaired electrons but the magnetic moment of $Cr^{3+}$ is $3.87\,BM$. and that of $Co^{2+}$ is $4.87\,BM$. Why ?
Solid $CuSO_4·5H_2O$ having covalent, ionic as well as co-ordinate bonds. Copper atom/ion forms ................. co-ordinate bonds with water.
The ionic radius of $Cr$ is minimum is which of the following compounds
Which of the following will act as best oxidizing agents
The $3d$ metal ions form coloured compounds because the energy corresponding to the following lies in the visible range of electromagnetic spectrum