The properties of two elements are listed. Element Atomic radius (pm) Ionic radius (pm) First ionization energy (kJ/mol) Electron affinity (kJ/mol) Electronegativity Br 114 195 1140 negative 325 3 point 0 cap k 243 152.2 418 point 8 negative 48 point 4 0.82 Which prediction is supported by the information in the table?

First ionization energy measures the energy needed to remove an electron from an atom. Potassium (K) has a much lower first ionization energy than bromine (418 kJ/mol compared with 1,140 kJ/mol), so it gives up an electron more easily. Therefore, the supported prediction is that K will give up an electron more easily than Br.

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