Oxygen is in group 16, and it has 6 valence electrons.
What are the valence electrons?
Valence electrons are the electrons in the outermost shell, or energy level, of an atom.
Oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
We can write the configuration of oxygen's valence electrons as 2s²2p⁴.
Hence, Oxygen has 6 valence electrons.
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