Which of the following isoelectronic ions has the lowest ionization energy? — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

2 S is biggest amongst all. removal of e- is easy. 100. The ionization potential of X– ion is equal to (a) The electron affinity of X atom (b) The electronegativity of X atom (c) The ionization potential of X atom (d) None of these We can write the ionization potential of X in terms of reaction as- ( ) ( ) e ..........I.P X g X g -> ( ) ( )..........EA X g e X g -> From these two equations, we have IP of X = EA of X Thus, the correct option is (a) the electron affinity of X the atom. 101. Second ionization potential of Li, Be and B is in the order (a) Li > Be > B (b) Li