Answer:
1. Fermi
2. Neutron
3. Fission
4. Atomic mass
5. Fusion
6. Becquerel
7. Curie
Step-by-step explanation:
1. The invention of the first nuclear reactor was led by a scientist called ENRICO FERMI.
2. A neutron is a subatomic particle with the symbol "n". It has a mass number of 1 and a charge of 0, hence, it is debited by 1/0n
3. Nuclear fission is the splitting of nuclei into lighter elements.
4. Atomic mass or mass number is the number of neutrons and protons in the atom of an element.
5. Fusion is the building up of heavier elements from smaller ones. It is the opposite of fission.
6. Henri Becquerel is the physcist from France who discovered radioactivity.
7. Curie (Ci) is the unit of radiation, given after the scientist who contributed immensely to radioactivity, called MARIE CURIE.