The period table of familiar elements expresses the periodicity of properties by arranging the elements in the order of atomic number, with the number of protons contained in the nucleus as the "atomic number".Electrons are packed in order from the lowest energy orbit around the nucleus according to the number of protons with positive electricity, but in the helium, neon, etc. called rare gases at the right end of the periodic table, the electrons are in the orbit. It just fills the shell and is very stable.
On the other hand, even in the atomic nucleus itself, it is possible to think of the same orbital motion as electrons for the protons and neutrons that make up the atomic nucleus.By the interaction acting on protons and neutrons, orbits divided into several shells like electrons are formed, and the orbits with the lowest energy are clogged in order.In particular, the magic number (magic number) known to stabilize the atomic nucleus is when the number of protons is 2,8,20,28 ..., and the shell of the orbit is just buried.
From this, the group at Kyoto University came up with the idea of creating a periodic table of nuclei.Since neutrons are included in the nucleus in addition to protons, isotopes with different numbers of neutrons exist even for the same element, but they are the most representative for each element so that the correspondence with the periodic table of the elements can be seen. I chose a typical isotope.At the right end of the table, elements whose number of protons is a magic number are arranged in correspondence with noble gases.In this way, surprisingly, the world's first periodic table of nuclei corresponding to the periodic table of elements was devised.
This new periodic table reflects the great differences in the properties of electron and proton orbitals, as well as the deformation and stability of the nuclei of each element, as well as the shell structure.It can be said that the creation of the periodic table of nuclei, which can be easily compared with the periodic table of elements, has created a new index for learning the properties of nuclei, including magic numbers.
This group named the three-dimensional periodic table of atomic nuclei derived from atomic nuclei (nuclei) "Nucleitouch", and expects it to be used for education in the future.
Paper information:[Foundations of Chemistry] A Nuclear Periodic Table
