How many valence electrons does oxygen atom has? Which electrons are they?
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Oxygen is #8 in the periodical table. First electron shell can hold 2 electrons; second, 8. Therefore, out of 8 electrons, 2 go to the first shell and 6 to the second; valence electrons are the ones on the outermost shell (there are some exceptions, but they are much further down the table).
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Answer:
oxygen has 6 valence electrons.
Explanation:
Atomic mass number of oxygen is 8.
therefore its electronic configuration is (2,6). valence electrons is no od shells in outermost shell. as oxygen has 6 electrons in outermost shell. thus it haz 6 valence electrons
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