This is Dr. B. Let's do the Lewis structure
for H2O2: Hydrogen Peroxide, also called dihydrogen
dioxide.
On the periodic table, Hydrogen's in group
1 so it has 1 valence electron, but we have
two of them, so we need to multiply by 2.
Oxygen, group 6 or 16, we have two of those,
so let's multiply that by 2 as well for a
total of 14 valence electrons.
Let's draw it.
We'll put the H's on the outside, they always
go on the outside.
So O, O, then an H and an H here.
Let's put some valence electrons here.
First, we'll form the chemical bonds: 2, 4,
6 valence eletrons.
Hydrogen only needs two valence electrons
for a full outer shell, so it's good.
Now we'll put electrons on the inner atoms.
So we have 2, 4, 6, 8, 10, 12, 14 valence
electrons.
We've used all our valence electrons.
You can see that each Oxygen has 8 valence
electrons, so it has its octet satisfied.
The Hydrogens are good.
That's the Lewis dot structure for H2O2.
We can draw it also as a structural formula,
and that would look like this right here.
That's it: Lewis structure, H2O2.
This is Dr. B., thanks for watching.
