The energy of electron in first energy level is – 21.79 × 10^-12 erg per atom. The energy of electron in second energy level is The energy of electron in first energy level is - 21.79 × 10^-12 erg per atom. The energy of electron in second energy level is December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related