An electron in He⁺ has an angular momentum of 3.165 × 10⁻³⁴ J s. What is its kinetic energy? (h = 6.626 × 10⁻³⁴ J s, mₑ
n=3. v = 1.46×10⁶ m s⁻¹. KE ≈ 9.7×10⁻¹⁹ J.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Electronic Configuration - Aufbau Pauli Hund and Stability