Answer
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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Identify the Charge
The chemical formula O^2− represents an oxygen anion with a charge of - 2. To convert this to coulombs, we need to use the elementary charge.
Step 3:: Recall the Elementary Charge
The elementary charge (the charge of a single proton or electron) is $$1.602 \times 10^{-19}~\mathrm{C}$$ (coulombs).
Step 4:: Calculate the Total Charge
Q = -2 \times (1.602 \times 10^{-19}~\mathrm{C})
Since the ion has a - 2 charge, we multiply the elementary charge by - 2:
Step 5:: Compute the Final Charge
Q = -3.204 \times 10^{-19}~\mathrm{C}
Final Answer
The charge of the O^2− anion is - 3.204 \times 10^{- 19}~\mathrm{C} (coulombs).
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