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How would the structure of an atom that has an atomic number of 9 and a mass number of 19

differ from the structure of an atom that has an atomic number of 8 and a mass number of 16?

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Answer:In the 1st structure, it would have 7 valance electrons, and the 2nd would only have 6.(as shown is the photo)

How would the structure of an atom that has an atomic number of 9 and a mass number-example-1
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