Match the following

$$ \begin{array}{llll} \hline & \text { List-I (Element) } & & \text { List-II (Block) } \\ \hline \text { (A) } & \mathrm{Cd} & \text { I } & f \text {-block } \\ \hline \text { (B) } & \mathrm{Eu} & \text { II } & s \text {-block } \\ \hline \text { (C) } & \mathrm{Se} & \text { III } & d \text {-block } \\ \hline \text { (D) } & \mathrm{Ba} & \text { IV } & p \text {-block } \\ \hline \end{array} $$

The correct answer is

In long form of periodic table an element ' $E$ ' has atomic number 78 . The period and group number of the element are $x$ and $y$ respectively. $(x+y)$ is equal to

In second period of the modern periodic table, two elements $X$ and $Y$ have higher first ionisation enthalpy values than the preceding and succeeding elements. $X$ and $Y$ are respectively

$$ \text { Match the following. } $$

$$ \text { List-I (Element) } $$		$$ \text { List-II }\left(\Delta_{\mathrm{e}g} H\right) \text { (in } \mathrm{kJmol}^{-1} \text { ) } $$
A.	O	I.	-200
B.	F	II.	-349
C.	Cl	III.	-141
D.	S	IV.	-328
		V.	+48

The correct answer is