Which atoms can be fissioned? Whether an atomic bomb is nuclear fission or fusion

Except for hydrogen, it is fine, but with iron as the midpoint, the fission of elements greater than iron releases energy, and the elements smaller than iron have to absorb energy in order to fission. It is wrong that unstable elements can be fissioned! Why the atomic bomb.

Nuclear power plants all use heavy elements as nuclear fuel? The reason is that the nucleus of heavy elements is unstable and prone to nuclear fission, Note: It is easier to fission than light elements, not that light elements cannot be fissioned!

That is to say, the high temperature and high pressure conditions for fission with uranium, plutonium and other elements are lower than those of other elements. Copper, gold, etc. can all be fissioned, but the required reaction conditions are too high, even if one nucleus is fissioned.

The resulting high temperature and high pressure also do not allow it to continue fission, i.e. a chain reaction cannot occur. Iron is the most stable element in the universe and is the turning point between fission and fusion, elements higher than iron must absorb a lot of energy to fuse, and elements lower than iron must also absorb energy for fission. For example, iron can be fused into gold, but it must provide a lot of energy.

Iron fission into aluminum can release energy, but these nuclear reactions cannot be completed by humans, because the high temperature and high pressure conditions required are not attainable on Earth. Even in the universe, the current copper, gold and other elements are supernovae** are produced. So in microphysics, there have always been two theories, the theory of the infinite divisibility of matter and elementary particles.

Theory (of course, excluding the current string theory, the theory of infinite divisibility of matter is that the current elementary particles are not the origin of matter, but can be decomposed into smaller elementary particles, while the theory of elementary particles is that particles are composed of some elementary particles, and now it is called quarks.

And I don't know if it's subdivided, hehe, there is no corresponding theory in the scientific community at present.

Nuclear fission has two modes, one is from heavy nuclei, spontaneously fission, and the release of energy. The other is nuclear fission triggered by the action of neutrons, which is the main way for humans to release a large amount of atomic energy so far.

Are you in junior high school physics, or high school, or college level?

The atomic bomb is a nuclear fission of uranium-235.

There are so many protons in the nucleus of uranium, it must be fission.

The hydrogen bomb, which is the relative of deuterium tritium, produces nuclear fusion, and the hydrogen atom has only one proton and can only coalesce, so it is nuclear fusion.

The power of the atomic bomb is less than that of the hydrogen bomb, and the atomic bomb is nuclear fission. The hydrogen bomb is more powerful than the atomic bomb and is nuclear fusion. The power of the atomic bomb can reach a maximum of 100,000 tons of TNT. The maximum hydrogen bomb can reach 100 million tons of TNT.

The atomic bomb is fission, and the hydrogen bomb is fusion.

An atomic bomb is nuclear fission, and a hydrogen bomb is nuclear fusion.