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

Which of the following statements is incorrect?

Which of the following processes represents the highest ionization energy?

Which of the following statements is wrong?

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: The first ionization enthalpy of $O$ is lower than that of $N$ and $F$.
Reason $R$: The loss of an electron from $O$ leads to a stable half-filled $p$ orbital.
In light of the above statements, choose the most appropriate answer from the options given below:

As one moves along a given row in the periodic table,ionization energy