Maximum oxidation state is shown by

The $I.P.$ values of $Cr, Zn, Mn$,and $Hg$ are $7.4 \ eV, 6.7 \ eV, 10.4 \ eV$,and $9.3 \ eV$. These $I.P.$ values are not listed in the order of the elements. Identify the correct $I.P.$ value for the given elements.

Calculate the 'spin only' magnetic moment of $M^{2+}_{(aq)}$ ion $(Z=27)$.

Which of the following species would be expected to be paramagnetic?

The correct option with the order of melting points of the pairs $(Mn, Fe)$, $(Tc, Ru)$ and $(Re, Os)$ is $:$

Which element from the following is $NOT$ considered a transition element on the basis of electronic configuration?