Neet
Structure Of Atom
NEET 2022 Phase 2
MCQ+4 / -12022
When electromagnetic radiation of wavelength 300 nm falls on the surface of a metal, electrons are emitted with the kinetic energy of 1.68 \(\times\) 105 J mol\(-\)1. What is the minimum energy needed to remove an electron from the metal?
(h = 6.626 \(\times\) 10\(-\)34 Js, c = 3 \(\times\) 108 ms\(-\)1, NA = 6.022 \(\times\) 1023 mol\(-\)1)