MCQ 184

   *☄NUCLEAR*
     **CHEMISTRY*☄
*🔹Nuclear chemistry is the branch of science.which deals with the phenomenon of nuclei of atoms.
🔹Father of nuclear chemistry--OttoHahn.
🔹 *Radio* *activity*
  The phenomenon of spontaneous emission of active radiations from certain substances.
🔹Natural radioactivity
   If a substance emits radiations by itself
🔹Artificial radioactivity

   If a substance starts emitting radiation on exposure to rays from a natural radio active substance.
🔹Radio active rays--
  Alpha, Beta, and Gamma.
🔹simplest radio active atom--Tritium
🔹Gaseous radioactive element--Radon
🔹Nuclear fission discoverd by --
Otto Hann& Fritz Strassmann
🔹The principle of atom bomb--Nuclear fission.
🔹Father of atom bomb--Robert Oppen heimer.
🔹Principle of hydrogen bomb--Nuclear fusion.
🔹Father of hydrogen bomb--Edward Teller
🔹The energy of the sun is due to Nuclear fusion reaction.