Which of the following has eight valence electrons? A)Ti⁴⁺ B)Kr C)Cl^- D)Na⁺ E)all of the above

Question

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All the given options represent species with eight valence electrons. Option A represents a compound with sulfur and titanium, where the notation suggests a formal charge or oxidation state that results in a complete octet for sulfur. Option B, Kr (krypton), is a noble gas with a naturally complete octet. Option C represents a chlorine species with a notation indicating it has gained an electron to complete its octet. Option D represents a sodium species in a state that suggests it has lost an electron, but the notation is misleading as it implies a complete octet, which is not typical for sodium in its ionic state. However, considering the context of the question, it seems to imply that all options are intended to represent species with eight valence electrons, despite the unusual notation for sodium.

Which of the Following Has Eight Valence Electrons