6. Lewis Structures of CH₃OH

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1. Count the total number of valence shell (N_T) for all the atoms in this molecule. this anion.

	Wrong. They are more than 12 electrons
	Right. The number of valence electrons is 14
	Wrong. Not so many electrons.

2. Selecciona el átomo central:

	Right. In general is the less electronegative atom, excluding H atoms. Central atom: carbon.
	Wrong. In general is the less electronegative atom, excluding H atoms.

3. How many electrons are used in single bonds?:

	Wrong. There are five bonds and each bond requires two electrons.
	Right. Five single bonds require 10 electrons

4. To complete the valence shell the terminal atoms need (electrons).

	Right. Three hydrogen atoms share two electrons with the carbon atom. One share two electrons with the oxygen atom. All have saturated their valence shell. No more electrons needed.
	Wrong. The hydrogen atoms have saturated their valence shell through C-H and O-H bonds.

5. How many additional electrons need the central atom?

	Right. The carbon atom also completes the valence shell through four single bonds. Three C-H bonds and one C-O bond. Los cuatro electrones restantes. The remaining four electrons will be located on the oxygen atom.
	Wrong. The carbon atom already completes the eight electrons around.
	Wrong The carbon atom already completes the eight electrons around.

6. How is the geometry around the central atom in this molecule? Structures

	Wrong. The carbon atom has an environment of type AX4. Check the structures table.
	Wrong. The carbon atom has an environment of type AX4. Check the structures table. enlace.
	Right The carbon atom has an environment of type AX4 associated with a tetrahedral geometry of the four bonds. Tetrahedral

7. ¿Is this molecule polar? Electronegativity y Polarity

	Wrong. This molecule has a polar bond mainly due to the C-O-H unit.
	Correct This molecule has polar bonds and the resulting dipolar moment is non zero. Dipols

8. ¿What orbital uses the central atom? Orbitals

	Wrong.One "sp" hybridization involves only two positions around the central atom.
	Wrong. One sp2 hybridization only involves three positions around the central atom.
	Correct The four sp3 orbitals locate two lone electron pairs and two bonding (shared) pairs. sp3 orbitals