The chemist August Kekulé was looking at how benzene arranged its six carbon and hydrogen atoms. Thinking with regard to the problem, he dozed off, and dreamt of dancing atoms that fell into a snakelike sample, which led him to discover the benzene ring. As Kekulé wrote in his diary, https://tarotbuenoybarato08428.targetblogs.com/29239226/problem-solving-an-overview