A proton, a neutron, an electron and an α-particle have same energy. Then their de-Broglie wavelengths compare as. a neutron A proton an electron and an α-particle have same energy. Then their de-Broglie wavelengths compare as. June 9, 2021 Category: Chapter 11 - Dual Nature of Radiation and Matter , NCERT Exemplar Class 12 , [...]