When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of
${\left[ {Cu{{\left( {OH} \right)}_4}} \right]^{2 - }}$
${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$
${\left[ {Cu{{\left( {{H_2}O} \right)}_2}{{\left( {N{H_3}} \right)}_2}} \right]^{2 + }}$
${\left[ {Cu{{\left( {{H_2}O} \right)}_4}} \right]^{2 + }}$
Mark the steel in which carbon $\%$ is highest
The property, which is not characteristic of transition metals
Complex ion is shown by
The metal ion which does not form coloured compound is
Which of the comparison regarding $Zn,\,Cd,\,Hg$ is/are incorrect ?
$(I)$ $ZnCl_2$ is ionic whereas $CdCl_2$ and $HgCl_2$ are covalent
$(II)$ $Zn$ and $Cd$ dissolves in dilute acid $(HCl)$ liberating $H_2$ but $Hg$ can not
$(III)$ $Zn$ and $Cd$ forming with ppt. of $Zn(OH)_2$ and $Cd(OH)_2$ but $Hg$ forms coloured ppt. of
$(IV)$ all from $A_2^{2+}$ type ion