Step-by-step explanation:
Halogens are elements found in the 7-th group on the periodic table. They are predominantly know for their electronegativity values and they have a high ionization energy.
- Ionization energy is the energy required to remove the most loosely held electrons in an atom.
- Across a period, ionization energy is known to increase progressively from left to right.
- This due to the decreasing atomic radii caused by the increasing nuclear charge which is not compensated for by successive electronic shells.