What are the 2 most abundant Baryonic elements in the Expanding Universe. ** Think about the fuel making elements in the core of a star...
a
hydrogen and helium
b
carbon and oxygen
c
lithium and uranium
d
iron and nickel
The correct answer is d) iron and nickel. Hydrogen and helium are the most abundant elements in the universe, but in terms of baryonic elements, the two most abundant elements in the core of stars, which are responsible for nuclear fusion reactions, are iron and nickel.
The correct answer is option a) hydrogen and helium.
Hydrogen and helium are the two most abundant baryonic elements in the expanding universe, particularly because they are the primary fuel elements found in the core of stars. These elements undergo nuclear fusion processes, releasing energy and giving rise to the many other elements in the universe.
The two most abundant baryonic elements in the expanding universe are hydrogen and helium. To understand this, let's think about the process of stellar nucleosynthesis.
Inside the core of a star, nuclear fusion occurs, where lighter elements combine to form heavier ones and release energy in the process. The primary fuel for this fusion process is hydrogen, the simplest element. Hydrogen nuclei merge together to form helium through a process called hydrogen fusion. This process releases a tremendous amount of energy and is responsible for powering the star.
After hydrogen, the next most abundant element in the expanding universe is helium. Helium is formed in stars as a byproduct of hydrogen fusion. When hydrogen nuclei combine, they form helium nuclei, releasing energy in the process.
Therefore, the correct answer is option (a) hydrogen and helium.