Difference between H-Bomb and A-Bomb?
An atomic bomb (A-Bomb) uses nuclear fission to create an explosion. The nuclear fission is from a “pit” of uranium 235 or plutonium 239. A hydrogen bomb (H-Bomb) uses nuclear fission from uranium or plutonium to ignite a subsequent FUSION reaction using lithium-6 deuteride (formula LiD). There is no theoretical upper limit for the explosive yield of a hydrogen bomb. There is a practical upper limit for the explosive yield of a pure atomic bomb. So all nuclear weapons are atomic bombs, and some atomic bombs are “upgraded” in yield to hydrogen bombs. Deuterium is the “heavy” form of hydrogen (hydrogen with one proton and one neutron in its nucleus). LiD is just a convenient solid form of deuterium.