(URGENT!!!!!) the electron configuration of some elements are given. Based on the electron configuration which ELEMENTS can likely form ions with multiple charges?
a) zinc [Ar] 3d¹⁰4s² b) iron [Ar] 3d⁶4s² c) sodium [Ne] 3s¹ d) cobalt [Ar] 3d⁷ 4s² e) silver [Kr] 4d¹⁰ 5s¹