Yes. S2- has the electronic configuration of argon
[Ar]3d104s24p6
Sulfide, S2-
They all have the same electron configuration as the noble gas argon.
1s22s22p6
argon and S2- are isoelectronic
[Ar]3d104s24p6
Sulfide, S2-
Sulfur atoms will gain two electrons in order to achieve a noble gas electron configuration. A sulfide ion has the formula S2-.
They all have the same electron configuration as the noble gas argon.
1s22s22p6
S2- ion: [Ne]3s23p6
Sulfide ion (S2- ion) (and not sulfur element) is isoelectronic with argon
argon and S2- are isoelectronic
The stable ions of all the elements except the Transition metals, Actinide, and Lanthanide series (that is the d and f block elements) form stable ions that are isoelectronic to a nobel gas by gaining or losing electrons in order to achieve an s2 p6 stable octet. For example, sodium will lose one electron to have the same electron configuration as neon, while nitrogen will gain three electrons to become isoelectronic to neon.
S2- ion is isoelectronic with argon (with 18 electrons).
There is no such noble gas with the same electron configuration as helium ion. Helium is the first noble gas, is stable and does not form ions. There can be, however, other ions such as H- or Li+ that will have the same number of electrons as element helium.
Sulphur is not iso-electronic with any noble gas. However sulphide ion (S2- ion) is iso-electronic with argon with 18 electrons.