which ion is formed when an atom of fluorine (f) gains one electron?\no f⁻¹\no f⁻²\no f⁺¹\no f⁺²
which ion is formed when an atom of fluorine (f) gains one electron?\no f⁻¹\no f⁻²\no f⁺¹\no f⁺²
Answer
Answer:
A. $F^-$
Explanation:
Step1: Understand electron - gain process
An atom gains electrons to form an anion.
Step2: Analyze fluorine's electron - gain
Fluorine has 7 valence electrons. When it gains 1 electron, it has a total of 8 valence electrons and a charge of - 1. The ion formed is $F^-$.