Number of valence electrons
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I think that your question is incomplete.
Complete the question valence of which element ?
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Answer:
Periodic table group Valence electrons
Group 14 (IV) (carbon group) 4
Group 15 (V) (pnictogens or nitrogen group) 5
Group 16 (VI) (chalcogens or oxygen group) 6
Group 17 (VII) (halogens) 7
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