MonroeNeiford
Answered

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Which symbol represents a particle that has the same total number of electrons as S2–?
(1) O2– (3) Se2–
(2) Si (4) Ar

Sagot :

poppopularbee3
4) Ar Hope this helps!!!!! :)

Answer;

Ar (Argon)

Explanation;

-S (Sulfur) atom has 16 electrons, however it forms an anion (negatively charged ion) by gaining two electrons. Therefore; S^2- has 18 electrons. In other words it requires two electrons to form a stable configuration or an octet configuration.

-Argon (Ar) is a noble gas (group 8 element) which means it has an octet configuration. It has 18 electrons similar to an ion of sulfur (S^2-).

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