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QuestionChemistry

What is the Lewis structure for SiS 2 ​ ?
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Step 1:
I'll solve this problem step by step, following the specified LaTeX formatting guidelines:

Step 2:
: Determine the total number of valence electrons

- Total valence electrons: $$4 + (2 \times 6) = 16$$ valence electrons
- Silicon (Si) is in Group 14 and has 4 valence electrons - Sulfur (S) is in Group 16 and has 6 valence electrons

Step 3:
: Arrange atoms and connect with single bonds

- Single bonds use $$4$$ electrons
- Place Si in the center - Connect two S atoms to Si with single bonds

Step 4:
: Distribute remaining electrons as lone pairs

- Each S atom will have 3 lone pairs ($$6$$ electrons per S atom)
- Place lone pairs on terminal S atoms first

Step 5:
: Check octet rule

- Si will have 4 electrons (2 single bonds) - Each S will have 8 electrons (2 from single bond, 6 from lone pairs)

Final Answer

- Si at center with single bonds to two S atoms - Each S atom has 3 lone pairs - Follows the octet rule for all atoms