The type of hybridization, electronegativity differences, molecular geometry, type of intermolecular force and formal charge of Ethanol and Nacl.

Ethanol:

1. Hybridization: Ethanol has sp3 hybridization.
2. Electronegativity differences: There is a difference in electronegativity between the carbon and oxygen atoms in ethanol, with oxygen being more electronegative than carbon.
3. Molecular geometry: Ethanol has a bent molecular geometry due to the presence of the lone pairs on the oxygen atom.
4. Type of intermolecular force: Ethanol can exhibit hydrogen bonding as an intermolecular force.
5. Formal charge: The formal charges on the atoms in ethanol are as follows: carbon (+1), oxygen (-1), and hydrogen (0).

NaCl:

1. Hybridization: NaCl does not have hybridization as it is an ionic compound composed of Na+ and Cl- ions.
2. Electronegativity differences: There is a large electronegativity difference between sodium (Na) and chlorine (Cl), with chlorine being more electronegative than sodium.
3. Molecular geometry: Since NaCl is an ionic compound, it does not have a molecular geometry.
4. Type of intermolecular force: NaCl exhibits ionic bonding as the intermolecular force.
5. Formal charge: In NaCl, the sodium ion has a formal charge of +1 and the chlorine ion has a formal charge of -1.