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Question: Answered & Verified by Expert
Why do group 17 elements (the halogens) have very high negative electron gain enthalpies?
ChemistryClassification of Elements and Periodicity in PropertiesNEET
Options:
  • A They have small atomic sizes.
  • B They have stable noble gas electronic configurations.
  • C They have low electron-electron repulsion.
  • D They have low effective nuclear charge.
Solution:
1438 Upvotes Verified Answer
The correct answer is: They have stable noble gas electronic configurations.
Halogens have very high negative electron gain enthalpies because they can attain stable noble gas electronic configurations by picking up an electron.

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