How do you draw the Lewis dot structure for #KNO_3#?
Well, you gots a potassium cation, and nitrate anion as the gegenion..
Nitrate anion is an interesting customer in terms of resonance, in that THREE of the FOUR atoms bear a formal electric charge in the resonance structure. And of course the charges SUM to the formal charge of nitrate anion, i.e. negative ONE...
And so for
And so we gots 12 electron pairs to distribute over four centres...nitrogen as the least electronegative atom is the CENTRAL atom:
As written nitrate has a formal NEGATIVE charge..as the Lewis structure indicates, and neutrality for THE SALT is obtained with the potassium cation,
Can you do the same thing for