Canary Islands PAU Chemistry Practice Questions - Canary Islands PAU Chemistry Examination 2026 (Química 2o Bachillerato COPAU) Exam

Among the isoelectronic species Na⁺, Ne, F⁻, and O²⁻, which species has the largest ionic/atomic radius?

O²⁻ F⁻ Ne Na⁺

Correct Answer:

O²⁻

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