The energy required to eject an electron from a metal is 4.5 × 10⁻¹⁹ J. If light of frequency 8.0 × 10¹⁴ Hz is used, wha
E ≈ 5.301×10⁻¹⁹ J. KE ≈ 8.008×10⁻²⁰ J.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Shapes of Orbitals - s p d f and Nodes and Radial Probability