Dual nature of electron was first proposed by de-Broglie. He gave the following equation for the wavelength of electron. λ=mvh He proposed that all mieroparticles like electrons, protons, neutrons etc. have dual nature i.e., both wave nature as well as particle nature. Interference and diffraction support the wave nature of electron. E=mc2 support the particle nature of electron. E=hv=λhc is de-Broglie equation, it supports both wave nature and particle nature of electron.