Answer: he shot tiny alpha particles throug a piece of gold foil.
Explanation:
And also explosion tha is another type
26 because you need to do 54-28=26
The atomic mass number is the number of protons AND neutrons together.
Answer: D) helium.
Explanation:
Nuclear fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

Nuclear fusion is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.
Example: 
Thus when deuterium and tritium , the two isotopes of hydrogen are fused, a heavier nuclei helium is being formed from two smaller nuclei releasing a neutron.
Malleable, shiny and good conductors
A B E