Practice: Determine which atom in the following set has the largest electron affinity: N, O, C, B, Ne
a) N b) O c) C d) B e) Ne
Electron Affinity is the energy released from the addition of an electron to a gaseous atom or ion.
Electron Affinity
Concept #1: Electron Affinity
Concept #2: Periodic Trend
Generally, electron affinity increases moving from left to right across a period and going up a group.
Example #1: Which of the following halogens will release the most energy with the addition of an electron?
Practice: Rank the following elements in order of increasing electron affinity: Cs, Hg, F, S
Practice: Which one of the following atoms has the least tendency to gain another electron?
