We’re being asked to determine the element with the highest (most exothermic/ most negative) electron affinity.
Recall that electron affinity is the energy change from the addition of 1 e– to a gaseous element/ion.
It is represented by this chemical equation:
Atom(g) + e– → Ion–(g), ΔE = –E.A.
Which atom in each set has the most exothermic electron affinity?
i) N, O, Ne
ii) Al, Si, Cl
a. i) Ne ii) Cl
b. i) N ii) Cl
c. i) O ii) Cl
d. i) Ne ii) Si
e. i) O ii) Al
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What scientific concept do you need to know in order to solve this problem?
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