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

  • A 8 valence electrons
  • B 7 valence electrons
  • C 2 valence electrons
  • D 3 valence electrons

The correct answer is A. 8 valence electrons

halide ion is a halogen atom bearing a negative charge (which is an anion with a charge of -1). The halide anions are fluoride (F−), chloride (Cl−), bromide (Br−), iodide (I−) and astatide (At−).

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