We’re being asked to rank the given elements by decreasing 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.
The trend for electron affinity is as follows: it increases from left to right and decreases down a period in the periodic table. The given elements are:
Rank these elements according to electron affinity.
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Periodic Trends: Electron Affinity concept. You can view video lessons to learn Periodic Trends: Electron Affinity. Or if you need more Periodic Trends: Electron Affinity practice, you can also practice Periodic Trends: Electron Affinity practice problems.
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Our tutors rated the difficulty ofRank these elements according to electron affinity. ...as medium difficulty.
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Based on our data, we think this problem is relevant for Professor Goodson's class at NOTRE DAME.