If ε0 be the permittivity of vacuum and r be the radius of orbit of H- atom in which electron is revolving, then velocity of electron is given by : If ε0 be the permittivity of vacuum and r be the radius of orbit of H- atom in which electron is revolving then velocity of electron is given by : November 10, 2020 Category: Chapter 2 - Atomic Structure (Level 1 and Level 2) , N Awasthi Physical Chemistry , Facebook Messenger WhatsApp Share this:TwitterFacebook Related