Skip to content
New summer mock series is live Attempt timed papers for SSC, banking, and engineering entrances with updated syllabi for this season. View exams

Question

Which of the following atoms achieves a stable octet by gaining one electron?

Options

Choose one · Correct answer highlighted

Explanation

Chlorine (Cl) has 7 valence electrons ( [Ne] 3s² 3p⁵ ). Gaining one electron forms Cl⁻ with a noble gas configuration ( [Ar] ).