The chemist August Kekulé was thinking of how benzene arranged its six carbon and hydrogen atoms. Thinking with regards to the problem, he dozed off, and dreamt of dancing atoms that fell into a snakelike pattern, which led him to discover the benzene ring. As Kekulé wrote in his diary, https://tarotista-gratis33219.mybloglicious.com/49830490/problem-solving-an-overview