Solid $CuSO_4·5H_2O$ having covalent, ionic as well as co-ordinate bonds. Copper atom/ion forms ................. co-ordinate bonds with water.
$1$
$2$
$3$
$4$
Which of the following species is expected to show the highest magnetic moment? (At. Nos.: $Cr=24$, $Mn = 25$, $Co = 27$, $Ni = 28$, $Cu = 29)$
The aqueous solution of transition metal salt changes colour from pink to blue, when concentrated hydrochloric acid is added to it. The change In colour is due to
Which of the following statements is not true in regard to transition elements
Metal-metal bonding is more frequent in $4d$ or $5d$ series than in $3d$ series due to
Which of the following compounds is not coloured ?