S and Se
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
11
Nov
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 [...]