8. Lewis structure of CS₂, carbon disulfide.

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1. Total number of electrons (N_T) in the valence shell of the molecule?

	Correct. C: 4; S: 6.
	Wrong. Check the valence electrons for C and S.
	Wrong. Check the valence electrons for C and S.

2. Select the central atom:

	Correct. It is always the less electronegative atom, C
	Wrong. It is always the less electronegative atom.

3. Number of electrons used in single bonds.

	Wrong. Two C-S bonds require more than 2 electrons.
	Correct. Two C-S bonds require 4 electrons

4. Total number of electrons needed to complete the octeto in the terminal atoms.

	Wrong. Four additional electrons to each S atom will not complete the octeto.
	Wrong. Five additional electrons to each S atom will not complete the octeto.
	Correct. Six additional electrons to each S atom will complete the octeto.

5. ¿How many electrons are needed to complete the octeto in the central atom?

	Wrong. Two electrons are not enough to complete the octeto in the central atom.
	Wrong. Three electrons are not enough to complete the octeto in the central atom. Will make a total of 7 electrons around the C atom.
	Correct The carbon atom needs four electrons to complete the octeto. ¿What electrons are used?

Final Lewis structure

6. ¿How is the geometry of CS₂? Structures

	Correct. Only two bonds around the central atom.
	Wrong. Only two bonds around the central atom. An angular geometry would occur with a lone pair on the carbon atom.

Final geometry