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When an atom is charged, it is called an ion. How many electrons are in O^2-?
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When an atom is charged, it is called an ion. How many electrons are in O^2-?

When an atom is charged, it is called an ion. How many electrons are in O^2-?-example-1
User Thedethfox
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2 Answers

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O2- indicates an ion of oxygen having two extra electrons. I.e., since an oxygen atom normally has 8 protons and 8 electrons, this ion has 10 electrons (-10 charge) and 8 protons (+8 charge) giving it a charge of -2 (-10 + 8 = -2).
User Qevo
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1 vote

Answer:

10 electrons

Step-by-step explanation:

User Pankajagarwal
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