The first ionization potential values (in $eV$) for nitrogen and oxygen atoms are respectively:

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 $:$

Which of the following is the correct order of increasing second ionization energy?

The element with the highest value of ionization potential is

Which of the following statements is incorrect?

In the $2^{nd}$ period,which element has the highest value of the sum of the $1^{st}$ and $2^{nd}$ ionization energy $(I.E.)$?