These explosions have the energy to create elements heavier than iron, including uranium, lead and platinum. explosion, elements heavier than iron (such as uranium) are formed and are ejected into space. So, you see thats how heavier elements are formed. Students will know that the chemical elements heavier than iron are formed in supernova explosions. These neutrons are absorbed in the iron and iron decays as a conseequence, this produces a chain reaction which furthur gives birth to heavier elements. Knowledge assumed: * Elements heavier than iron form in supernovae C) helium to carbon fusion takes at least 100 million K to start. Here in their cores isotopes are formed like oxygen gets O17 and neon makes Ne21, these two isotopes react with He to produce neutrons. Atomic nuclei form into massive neutron clumps from the neutron capture. Students will be able to explain the formation of elements through the alpha ladder. B) the heavier the element, the higher the temperature to fuse it. a. The energies released in this fleeting moment dwarf that of the star's entire lifetime. Beta decay turns the element into a heavier element. 1 See answer Roschhieee Roschhieee Answer: Some of the universe's heavier elements are created by neutron star collisions and these heavy elements copes deep underneath planets. (Advanced) Was the Sun made in a supernova? With the nuclei of elements heavier than lead, the electric repulsion is so strong that some of them spontaneously eject positive fragments, usually nuclei of helium that form very stable combinations (alpha particles). Most irons are made by fusion in the cores of stars. QUESTION 21 Elements heavier than iron are known to be formed: a. in all main sequence stars b. in black holes C. during the helium flash process d. in Cepheid Variable stars e. in supernovae generally QUESTION 22 Which type of star is characterized by the highest mean density? E) All of the above are correct. How do elements heavier than iron are formed? (Advanced) Why do the explosions of Type Ia supernovae have a more predictable spectrum than those of regular Type II supernovae? A: The lightest elements in the universe — hydrogen, helium, and a little lithium — were born shortly after the Big Bang. Stars a few times bigger than our sun explode when they run out of energy at the end of their lifetimes. How are elements heavier than iron formed? From Nucleosynthesis - Wikipedia: “Neutron star collisions are now believed to be the main source of r-process elements. However, many of the chemical elements heavier than iron are also produced by slow neutron capture; the so-called s-process. Students will be able to explain the formation of heavier elements as a series of particle collisions and subsequent nuclear decay processes. Then, through beta decay, some of the neutrons turn into protons, as this nucleus is highly unstable with so many neutrons. 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