SORRY, YOU WERE INCORRECT.

HERE IS THE EXPLANATION OF THE QUESTION

 

Remember this:In all atomic symbols the the number of protons is equal to the atomic number (8 in Oxygen). If the element is electrically neutral then the number of electrons is also equal to the atomic number. If the element is charged, to find the # of electrons, you add one to the atomic number for each (-) charge and subtract one from the atomic number for each (+) charge. The atomic weight of an element represents the number of neutrons + the number of protons. Thus the number of neutrons is equal to: AW - AN.

 

#14b. Based on the above picture, an O2- ions contains how many electrons?

    1. 6
    2. 8
    3. 10 - It is 10 because the atomic number of Oxygen is 8, but you have two negative charges so you have to add 2 to that to get the # of electrons.
    4. 12

It looks like you're still having trouble so please reread pages 93 and 94 in your textbook and then come see me.

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GRRREAT!!!!!

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