Periodic Table And Periodicity

Observe the following data ( $\Delta_t H_1, \Delta_t H_2$ and $\Delta_{\mathrm{eg}} H$ represent the first, second ionisation enthalpies and electron gain enthalpy respectively)

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\( \text { Element } \)	\( \Delta_l H_1\left(\mathrm{kJmol}^{-1}\right) \)	\( \Delta_1 H_2\left(\mathrm{kJmol}^{-1}\right) \)	\( \Delta_{\mathrm{eg}} H\left(\mathrm{kJmol}^{-1}\right) \)
I	520	7300	-60
II	490	3051	-48
III	1681	3374	-328
IV	2372	5251	+48

Using the data identify the most reactive metal.