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Sean
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To draw the Lewis structure for the polyatomic trisulfide ion (S3^2-), follow these steps:
#### Solution By Steps
***Step 1: Determine the total number of valence electrons***
Each sulfur atom has 6 valence electrons. Since there are 3 sulfur atoms and the ion has a charge of 2-, there are 3 * 6 + 2 = 20 valence electrons.
***Step 2: Connect the atoms with single bonds***
Start by placing the three sulfur atoms in a linear arrangement and connect them with single bonds. Each single bond represents 2 electrons, so 3 single bonds use 6 electrons.
***Step 3: Distribute the remaining valence electrons***
After placing the single bonds, distribute the remaining 20 - 6 = 14 electrons as lone pairs on the sulfur atoms to satisfy the octet rule for each sulfur.
***Step 4: Check for octet completion***
Each sulfur atom should have 8 electrons around it (2 electrons from each single bond and 6 electrons from three lone pairs). This configuration satisfies the octet rule for all sulfur atoms.
#### Final Answer
The Lewis structure for the polyatomic trisulfide ion (S3^2-) shows a linear arrangement of three sulfur atoms, each connected by single bonds and surrounded by three lone pairs, totaling 8 valence electrons per sulfur atom.
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