Tropone is an unusually basic carbonyl (C=O) compound. When it is treated with one equivalent of the strong acid HBF4, it forms A, C7H7OBF4.
Draw the structure of A as its most stable resonance structure.

No table found. the question asks for covalent bond based on electronegativies

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.