With in each pair of elements of F and Cl, S and Se, and Li and Na, respectively, the elements that release more energy upon an electron gain are (a) F, Se and Na and Li and Na respectively S and Se Se and Na the elements that release more energy upon an electron gain are (a) F With in each pair of elements of F and Cl November 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related