marie curie

So I  read about Marie curie. She discovered two elements. The first one  is polonium.
  This is number 84 on the periodic table. It is used for anti static brushes. It's crystal structure is a cube. It is strong enough to kill someone immediately. It luckily is not easy to find.
      The next one is radium.It is number  88. It is used to make glow in the dark paint. It has a weaird  crystal shape. its atomic weight  is 226. It is SOOOO deadly because it is a radioactive element. here is a saying. "nothing in life is to be feared, it is only to be understood."