What word or two-word phrase describes the shape of the formaldehyde (#CH_2O#) molecule?
From counting valence electrons:
- Carbon has four valence electrons, so it tends to make four bonds in covalent compounds.
- Oxygen has six valence electrons, but as it tends to accept two, it tends to make two bonds in covalent compounds.
- Hydrogen is almost always going to make only one bond, given that it only has one valence electron.
Eventually, you should get that formaldehyde looks like this:
You can add the two remaining valence electrons onto