Which of the following elements has the highest work function value?

The atomic number of $Pd$ is $46$. The atomic numbers of the elements lying immediately above and below it in the same group are,respectively,.....................

The number of valence electrons present in the metal among $Cr$,$Co$,$Fe$,and $Ni$ which has the lowest enthalpy of atomisation is

The magnetic moment of $Gd^{3+}$ is ....... $B.M.$ $(Z = 64)$

Which of the following electronic configurations represents an atom that can exhibit the highest oxidation state?

For which of the following transition metal ion configurations is the highest magnetic moment observed?