The uncertainty in position of a proton is 5.0 × 10⁻¹¹ m. What is the minimum uncertainty in its velocity? (h = 6.626 ×
Δv ≥ h/(4π m Δx) ≈ 6.3×10² m s⁻¹.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Atomic Models - Thomson Rutherford and Bohr Model