Practice question

Given: Which compound involves ionic bonding between a group 2 element and a group 16 element? Formula: BaO forms by electron transfer from barium (group 2) to oxygen (group 16), creating Ba²+ and O²- .. Substitution: Substituting given values into formula as per NCERT 2026-27 method. Calculation: Simplifying step by step with proper SI units like m/s², J kg⁻¹ K⁻¹, 10⁻⁵, A m⁻¹ etc. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.