Chemistry · Electron Affinity Trends
Nitrogen has an unexpectedly low electron affinity compared to phosphorus in Group 15. Which of the following best explains this anomalous behavior of nitrogen?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Nitrogen has a large atomic radius that weakens the attraction for incoming electrons.
- 2The small atomic size of nitrogen leads to strong inter-electronic repulsions in its compact 2p subshell upon electron addition.✓
- 3Electron affinity increases smoothly down Group 15 due to increasing polarizability.
- 4Nitrogen forms multiple bonds that prevent the addition of an extra electron.
Correct answer
The small atomic size of nitrogen leads to strong inter-electronic repulsions in its compact 2p subshell upon electron addition.
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