How many valence electrons are there in oxygen atom with atomic number 8 A. C. 3 B. 2 D. 4​

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Answer:

the nonmetals oxygen (O), sulfur (S), and selenium (Se), the metalloid tellurium (Te), and the metal polonium (Po). The name "chalcogen" means "ore former," derived from the Greek words chalcos ("ore") and -gen ("formation").

Explanation:

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