9
AssignmentMultiple Choice

Periodic Trends

Question 9 • ***CPS Online Chemistry fall – 1-2027

Click the button that shows the correct relationship of the electron affinities of the elements bromine and chlorine.

Answer
A
Chlorine’s electron affinity value is more negative than the electron affinity value of bromine.
B
Bromine’s electron affinity value is more negative than the electron affinity value of chlorine.
C
This information cannot be determined using the periodic table.

Explanation

Chlorine and bromine are both halogens, and chlorine’s electron affinity is more exothermic: about −349 kJ/mol compared with bromine’s roughly −325 kJ/mol. Because −349 is more negative than −325, chlorine’s electron affinity value is more negative. The correct choice is “Chlorine’s electron affinity value is more negative than the electron affinity value of bromine.”

AI-written and checked against the verified answer.

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