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NEET
Exam
NEET
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

NEET · Chemistry · Classification of Elements and Periodicity in Properties

Why do group 17 elements (the halogens) have very high negative...

Why do group 17 elements (the halogens) have very high negative electron gain enthalpies?

Options

  1. AThey have small atomic sizes.
  2. BThey have stable noble gas electronic configurations.
  3. CThey have low electron-electron repulsion.
  4. DThey have low effective nuclear charge.

Correct answer

B. They have stable noble gas electronic configurations.

Step-by-step solution

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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