Practice question

Given: Which compound involves ionic bonding between a group 1 element and a group 16 element? These values define the system as per NCERT data. Formula: Na₂O forms by electron transfer from sodium (group 1) to oxygen (group 16), creating Na^+ and O²- .. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Substituting values like 1.2 × 10⁻⁵, 236 J kg⁻¹ K⁻¹, CH₃CH₂NH₂ etc. into the formula and simplifying step by step. Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.