QQuestionChemistry
QuestionChemistry
Use the periodic table to determine the charge on the oxide ion.
A. - 2
B. + 2
C. - 6
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Answer
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Step 1:I'll solve this step-by-step using the guidelines you specified:
Step 2:: Understand the Concept of Oxide Ions
An oxide ion is a negatively charged oxygen ion that forms when an oxygen atom gains electrons. To determine its charge, we need to consider the electron configuration of oxygen.
Step 3:: Examine Oxygen's Electron Configuration
Oxygen has an atomic number of 8, with the electron configuration $$1s^{2} 2s^{2} 2p^{4}$$.
In its neutral state, oxygen has 8 electrons.
Step 4:: Determine Electron Gain to Form Oxide Ion
To achieve a stable electron configuration like noble gases, oxygen needs to gain 2 electrons to complete its outer shell.
Step 5:: Calculate the Charge
O + 2e^{-} \rightarrow O^{2-}
When oxygen gains 2 electrons, it becomes a negatively charged ion:
Step 6:: Verify the Charge
The oxide ion now has 10 electrons (8 original + 2 gained), resulting in a - 2 charge.
Final Answer
The oxide ion has a charge of - 2, which allows it to achieve a stable electron configuration similar to neon.
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