This is for a review not a test.
what would n be? i don’t really understand how to find it.

The needed electrons, N = 4 for silicon (Si)

and N = 1 for chlorine (Cl).

Explanation:

Si has atomic number 14 and belongs to group 14  and 3 period.

The electronic configuration of Si is 1s²2s²2p⁶3s²3p².

so, there are 4 electrons in valence shell i.e) third shell (n=3)

so, according to Lewis it needs 4 more electrons to get stability via octet configuration.

Cl has atomic number 17 and belongs to group 17 and 3 period.

The electronic configuration of Cl is 1s²2s²2p⁶3s²3p⁵.

so, there are 7 electrons in valence shell i.e) third shell (n=3)

so, according to Lewis it needs 1 more electrons to get stability via octet configuration.

So, in order to get stability 4 Cl atoms form 4 covalent bonds with 1 Si atom

In a Covalent bond, electrons are shared. so, now both Si and Cl have octet configuration.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.