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QuestionChemistry

What is the charge of the anion O^2− in coulombs?
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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).