Practice question

Given: How many electrons are present in an ion with 16 protons, 16 neutrons, and a charge of -2? Formula: For a neutral atom, electrons = protons = 16. Substitution & Calculation: A charge of -2 means 2 extra electrons, so total electrons = 16 + 2 = 18. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.