Identify the incorrect order corresponding to the mentioned property.

Which of the following is the correct order of $I.E.$ (Ionization Energy)?

Compare the ionization enthalpy and electron gain enthalpy values of the elements given below:

Element Description	Element	$\Delta_{i}H_1$	$\Delta_{i}H_2$	$\Delta_{eg}H$
$(i)$ Most reactive non-metal	$(A)$	$419$	$3051$	$-48$
$(ii)$ Most reactive metal	$(B)$	$1681$	$3374$	$-328$
$(iii)$ Least reactive element	$(C)$	$738$	$1451$	$-40$
$(iv)$ Metal forming dihalide	$(D)$	$2372$	$5251$	$+48$

Given below are two statements $:$
Statement $(I) :$ The radii of isoelectronic species increase in the order $Mg^{2+} < Na^{+} < F^{-} < O^{2-}$.
Statement $(II) :$ The magnitude of electron gain enthalpy of halogens decreases in the order $Cl > F > Br > I$.
In the light of the above statements,choose the most appropriate answer from the options given below $:$

An element has the electronic configuration $1s^2 2s^2 2p^6 3s^2 3p^4$. Predict its period,group,and block.

Assign true $(T)$ and false $(F)$ for the following statements and select the correct option for your answer:
$(a) \, IP$ of $O_{(g)}$ is less than $IP$ of $O_{(g)}^{-}$
$(b) \, IP$ of $Ne_{(g)}$ is greater than $IP$ of $Ne_{(g)}^{+}$
$(c) \, EA$ of $O_{(g)}^{+}$ is greater than $EA$ of $O_{(g)}$
$(d) \, IP$ of $N_{(g)}$ is greater than $IP$ of $N_{(g)}^{+}$