Question

3 ions that are in an isoelectronic series with 86 electrons?

a) Cl^-
b) K^+
c) Ar^-
d) S^2-

Answer 1

The ions in an isoelectronic series with 86 electrons are Cl^-, Ar^-, and S^2-.

Step-by-step explanation:

Atoms and ions that have the same electron configuration are said to be isoelectronic. In this case, we are looking for ions that have 86 electrons. The ions in an isoelectronic series with 86 electrons are Cl^- (chloride ion), Ar^- (argon ion), and S^2- (sulfide ion). These ions have different nuclear charges, which affect their sizes.