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

Correct Answer:

Option A – 8 valence electrons

Explanation

A 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⁻) andastatide (At⁻).