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The first $(\Delta_{1}\text{H}_{1})$ and the second $(\Delta_{1}\text{H}_{1})$ionization enthalpies (in $\mathrm{kJ} \mathrm{~mol}^{-1}$ ) and the $(\Delta_{1}\text{H}_{1})$ electron gain enthalpy (in $\mathrm{kJ} \mathrm{~mol}^{-1}$ ) of a few elements are given below:

Elements	$\Delta\text{H}_{1}$	$\Delta{\text{H}}_{2}$	$\Delta_{\text{eg}}\text{H}$
I	520	7300	-60
II	419	3051	-48
III	1681	3374	-328
IV	1008	1846	-295
V	2372	5251	+48
VI	738	1451	-40

Which of the above elements is likely to be:
The metal which can form a predominantly stable covalent halide of the formula MX (X=halogen)?