Pick a molecule
Molecule
Step 2: tap a gray bond line to add a bond (1, 2, then 3). Step 3: tap a dotted spot next to an atom to add or remove a lone pair.
Step 1. Count valence electrons
Steps 2 and 3. Bonds, then lone pairs
Electrons in bonds: 0 in lone pairs: 0
Used: 0 of – Left: –
Pick a molecule and start with Step 1.
My table
| Molecule | Total e− | Shared pairs | Lone pairs | 2 × (shared + lone) |
|---|