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Which element requires the least amount of energy to remove the most loosely held electron from a ga

January 2020 NY Regents Chemistry Exam


6 Which element requires the least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state? (1) Na

(2) Ar

(3) P

(4) Cl


Solution: Ionization energy is the amount of energy needed to remove the most loosely held electron from a gaseous atom in the ground state. We can look at the ionization values on Table S for each element.

Answer: 1


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