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An electron can be added to a halogen atom to form a halide ion with

Chemistry
JAMB 2004

An electron can be added to a halogen atom to form a halide ion with

  • A. 2 valence electrons
  • B. 3 valence electrons
  • C. 7 valence electrons
  • D. 8 valence electrons
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Correct Answer: Option D
Explanation

When an electron is added to a halogen atom, it will have eight valence electrons. Halogens have seven valence electrons in their outermost shell. When an electron is added to a halogen atom, it fills its outermost shell, resulting in a full valence shell of 8 electrons.

There is an explanation video available below.

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Explanation Video

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