mw2 rules
Electrons.
Hydrogen atoms share electrons in a covalent bond.
The total number of shared electrons in a molecule of CH2O (formal charge -2) is 18. Each hydrogen atom shares 1 electron, each carbon atom shares 4 electrons, and the oxygen atom shares 6 electrons, adding up to a total of 18 shared electrons.
8
covalent
This is a molecule having a covalent bond.
covalant
covalant
Hydrogen atoms have one valence electron which is also the only electron they have.
4
2
1