The transition metals exhibit higher enthalpies of atomisation due to
their ability to show variable oxidation states
the presence of incompletely filled $d-$ subshell
their ability to exist in the solid state with unpaired electrons
strong interatomic interaction aries because of having large number of unpaired electrons in their atoms
Effective magnetic moment of $S{c^{ + 3}}$ ion is
Which of the following ions has the highest magnetic moment
$CuSO_4(aq) + 4NH_3 \rightarrow X,$ then $X$ 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
The magnetic moment of a transition metal compound has been calculated to be $3.87$ $B.M.$ The metal ion is