[AntonioLao]

Among the thousands of organic compounds listed in the Handbook of Chemistry and Physics (62nd edition) only one has an attached iron atom called Ferrocene or Dicyclopentadienyl iron, chemical formula is C10H10Fe. The single iron atom is sandwiched between two parallel pentagonal rings of C5H5 oriented 36° rotational symmetry from each other. Is this a fluke of nature for organic compounds to associate with metallic ions? Maybe only diehard chemists could supply any plausible explanation.

Generally, most nuclear chemists would agree that iron (Fe) is a metal belong to group 8 in the periodic table of chemical elements. Atomic number is 26. Electron configuration is 1s2-2s2-2p6-3s2-3p6-3d6-4s2. The weight of the most stable isotope is 56. Iron-56 is the end product of nucleosynthesis at the ignition temperature of 4 billions kelvins when fusion occurs for two silicon nuclei. These were formed by fusion of oxygen nuclei at lower temperature of 1.5 billions kelvins. In turn, these were formed by fusion of carbon nuclei and helium nuclei at lower temperature of 1/10 of a billion kelvins. Same temperature allows carbon nuclei to form from fusion of beryllium and helium nuclei while the beryllium nuclei were formed from fusion of 3 helium nuclei. At 10 millions kelvins the helium nuclei were formed from fusion of 4 hydrogen nuclei (4 protons). Above 6 billions kelvins the photodissociation of Iron-56 occurs by fission forming 13 helium nuclei and 4 neutrons.

The irony of this nuclear chemistry is the origin and whereabouts of negative ions (electrons) for neutralizing electric charge. If they are not formed by either fusion or fission where are they coming from? Another mystery is the rise and fall of temperature without knowing the real heat source. Some would say gravitational collapse. But this only accounts for the rise in temperature. What mechanism would be responsible for falling temperature?