Given below are two statements:
Statement $I$ : The correct order of first ionization enthalpy values of $Li, Na, F$ and $Cl$ is $Na < Li < Cl < F$.
Statement $II$ : The correct order of negative electron gain enthalpy values of $Li, Na, F$ and $Cl$ is $Na < Li < F < Cl$.
In the light of the above statements,choose the correct answer from the options given below :

Consider the following orders :-
$(I)$ $Li > Na$ (Reducing nature)
$(II)$ $BF_3 > BCl_3 > BBr_3 > BI_3$ (Rate of hydrolysis)
$(III)$ $B > C > N > O > F$ ($1^{st}$ ionization energy)
$(IV)$ $CCl_4 > SiCl_4$ (Boiling point)
The $CORRECT$ order$(s)$ are :-

The ground state electronic configurations of the elements,$U, V, W, X,$ and $Y$ (these symbols do not have any chemical significance) are as follows:
$U: 1s^2 2s^2 2p^3$
$V: 1s^2 2s^2 2p^6 3s^1$
$W: 1s^2 2s^2 2p^6 3s^2 3p^2$
$X: 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^2$
$Y: 1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6$
Determine which sequence of elements satisfies the following statements:
$(i)$ Element forms a carbonate which is not decomposed by heating
$(ii)$ Element is most likely to form coloured ionic compounds
$(iii)$ Element has the largest atomic radius
$(iv)$ Element forms only acidic oxide

The number of the following pairs of elements which exhibit a diagonal relationship is:
$1. B \text{ and } Si$
$2. Be \text{ and } Al$
$3. Li \text{ and } Mg$
$4. Al \text{ and } S$

Which of the following is not a periodic property?

Fluorine,chlorine,bromine and iodine are placed in the same group $(17)$ of the periodic table,because