which element has the lowest ionization energy?\nargon (ar)\nbromine (br)\ncesium (cs)\nnickel (ni)
which element has the lowest ionization energy?\nargon (ar)\nbromine (br)\ncesium (cs)\nnickel (ni)
Answer
Brief Explanation:
Ionization energy increases across a period and decreases down a group. Cesium (Cs) is in the first - group (alkali metals) and at the bottom of the periodic table among the given elements, so it has the lowest ionization energy.
Answer:
cesium (Cs)