in een bijspijkercursus voor mezelf, kom ik op wikipedia de volgende uitleg van de lewis structure tegen:
The formula of the nitrite ion is NO2−.
Step one: Choose a central atom. There is only one nitrogen atom, and it is the least electronegative atom, so it is the central atom by multiple criteria.
Step two: Count valence electrons. Nitrogen has 5 valence electrons; each oxygen has 6, for a total of (6 Ã 2) + 5 = 17. The ion has a charge of −1, which indicates an extra electron, so the total number of electrons is 18.
Step three: Place ion pairs. Each oxygen must be bonded to the nitrogen, which uses four electrons â two in each bond.
Nou gaat het mis, bij deze stap 3.
Waarom gebruik je twee elektronen per bond?
alvast bedankt,
groeten!
