Step 1 : Introduction to the question "2. This is a grey solid usually classed as a semi-metal. It has a highly poisonous oxide which has been identified as a possible cause of the death of Napoleon Bonaparte. Which of these has the chemical symbol As?"
...1. Arsenic 2. Argon 3. Astatine 4. Antimony Arsenic compounds have been used as medicine as well as poison for hundreds of years, and it is still licenced by the FDA for use in treating Leukemia. 'What does not kill me, makes me stronger', said Friedrich Nietzsche. But he's dead...
