1. Draw the electron dot formula for sulfamic acid (note that the first two hydrogen atoms are bound to the nitrogen atom, whereas the last hydrogen atom is bound to an oxygen atom. Bonds between one oxygen atom and another oxygen atom do not occur.)
2. Draw the electron dot formula for the anion in the precipitate (note that this structure has two double bonds to O, giving the central atom an expanded octet, but this results in lower formal charges overall).
3. Redraw, the electron dot formula for the anion. On this drawing, indicate the bond that was formed by setting the central atom to be atom 1 and the atom at the other end of the bond to be atom 2.
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