Answer:
Among the most outstanding achievements of Marie and Pierre Curie are:
1. Discovered the elements of Polonio and Radio.
2. They discovered and coined the term radioactivity to refer to the energy produced by the elements they discovered.
3. Identify the radioactive properties of thorium and uranium elements.
4. Maria Curie founded the medical research institute Marie Curie in France.
5. Development of portable radiology units for medical use
Step-by-step explanation: