The first ionization energy is the lowest for which of the following elements?

The first ionization energy of alkaline earth metals is higher than that of alkali metals. This is due to...

Given below are two statements $:$
Statement $(I) :$ The first ionisation enthalpy of group $14$ elements is higher than the corresponding elements of group $13.$
Statement $(II) :$ Melting points and boiling points of group $13$ elements are in general much higher than those of the corresponding elements of group $14.$ In the light of the above statements,choose the most appropriate answer from the options given below $:$

Sodium generally does not show an oxidation state of $+2$,because of its

Discuss and compare the trend in ionisation enthalpy of the elements of group-$1$ with those of group-$17$ elements.

Which element has the maximum first ionization potential?